Windows 10 v1909 updated to 20H2 is now slow

MiRaN1337

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Local time
9:32 PM
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Hello dears
I hope every one of you is doing well

So I have a desktop PC with the below specs:
MOBO: Asus Z97 Pro Gamer
CPU: Intel Core i7-4790K
RAM: Corsair Dominator Platinum 4x8 at 1868 MHz
GPU: Nvidia GTX 1070-Ti

I updated my windows from version 1909 to the latest 20H2. First thing I noticed is the startup time is way higher, it hands for like 10 seconds on the motherboard loading screen, then another 20-30 seconds on the windows welcome screen (The spinning dots). After going to the desktop from the welcome screen, the PC is unusable for like another 30 seconds (if I click, it shows explorer is not responding, end process or cancel).

I tried to do the SFC /scannow, the restore health commands and everything, nothing helped. After I lost hope, I downgraded back to 1909 until I find a guaranteed solution, but I can go back to 20H2 again if it helps you guys find my problem easier


Any help is appreciated

Best regards
 
Windows Version
Currently 1909, trying to run 20H2 without slowing

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    CPU
    Intel Core i7-4790K
    Motherboard
    Asus Z97 Pro Gamer
    Memory
    Corsair Dominator Platinum 4x8 at 1868 MHz
    Graphics Card(s)
    Nvidia GeForce GTX 1070-Ti
    Monitor(s) Displays
    Asus VG248QE
    Hard Drives
    Samsung 850 Evo
    WD Blue
    PSU
    EVGA 700B1
    Case
    Cooler Master HAF 912 Advanced
    Cooling
    Cryorig H7
    Keyboard
    Corsair K70 RAPIDFIRE - CHERRY® MX Speed
    Mouse
    Zowie FK2
    Internet Speed
    100 Mbits/s
    Browser
    Google Chrome

philc43

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Hello MiRaN1337,

Welcome to WindowsQ :)

How long did you persevere on 20H2? Did you give it a day or two to make sure the new system had settled down and completed all the background tasks?

Some simple checks you can do if you decide to repeat the upgrade is to start with a clean boot and see if this is any better. If it is you can gradually add back in the services and start-up programs to see which one is causing the problem.

 

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self-Build
    CPU
    Intel Core i5 3570K 3.4GHz
    Motherboard
    ASUS P8Z77-V LX
    Memory
    16GB
    Graphics Card(s)
    NVidia Geforce GTX 750Ti
    Sound Card
    On-board Realtek HD Audio
    Monitor(s) Displays
    Samsung 226BW
    Hard Drives
    1TB SSD + 1TB HDD
    PSU
    Corsair TX550
    Case
    Gigabyte IF233
    Keyboard
    Microsoft wired Keyboard 600
    Mouse
    Microsoft wired Basic Optical
    Internet Speed
    900MB/s
    Browser
    MS Edge
    Antivirus
    Microsoft Defender

MiRaN1337

Junior Member
Local time
9:32 PM
Posts
7
Thread starter
Hello MiRaN1337,

Welcome to WindowsQ :)

How long did you persevere on 20H2? Did you give it a day or two to make sure the new system had settled down and completed all the background tasks?

Some simple checks you can do if you decide to repeat the upgrade is to start with a clean boot and see if this is any better. If it is you can gradually add back in the services and start-up programs to see which one is causing the problem.

Hello philc43,

I gave it a few hours (While checking my task manager to see if it's doing any tasks, it was done though, my resources usages were all close to zero) and I did restart many times to see if it was getting any better, it took the same amount of time each try and it got fixed once I downgraded to 1909 again (So much faster, like I don't even see the welcome and spinning dots on 1909, while it says on it for like 30 seconds on 20H2)

Best regards
 

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    CPU
    Intel Core i7-4790K
    Motherboard
    Asus Z97 Pro Gamer
    Memory
    Corsair Dominator Platinum 4x8 at 1868 MHz
    Graphics Card(s)
    Nvidia GeForce GTX 1070-Ti
    Monitor(s) Displays
    Asus VG248QE
    Hard Drives
    Samsung 850 Evo
    WD Blue
    PSU
    EVGA 700B1
    Case
    Cooler Master HAF 912 Advanced
    Cooling
    Cryorig H7
    Keyboard
    Corsair K70 RAPIDFIRE - CHERRY® MX Speed
    Mouse
    Zowie FK2
    Internet Speed
    100 Mbits/s
    Browser
    Google Chrome

philc43

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I would generally recommend that you leave the system running for 24 hours to ensure all the background tasks are completed on a new install. If you wanted to try again we can certainly help you with any problems and walk you through the clean boot test if you need it after reading through the tutorial I provided the link to. It is possible that a driver needs updating or worst case is that your hardware is just not compatible with 20H2.
 

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self-Build
    CPU
    Intel Core i5 3570K 3.4GHz
    Motherboard
    ASUS P8Z77-V LX
    Memory
    16GB
    Graphics Card(s)
    NVidia Geforce GTX 750Ti
    Sound Card
    On-board Realtek HD Audio
    Monitor(s) Displays
    Samsung 226BW
    Hard Drives
    1TB SSD + 1TB HDD
    PSU
    Corsair TX550
    Case
    Gigabyte IF233
    Keyboard
    Microsoft wired Keyboard 600
    Mouse
    Microsoft wired Basic Optical
    Internet Speed
    900MB/s
    Browser
    MS Edge
    Antivirus
    Microsoft Defender

Digerati

Active Member
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44
Location
Nebraska, USA
I gave it a few hours
Yeah, I would give it a few days. Also, check to see how much free disk space you have on your boot drive. If low (I like to keep at least 20GB free - 30GB or more is better), then free up some space. Run Disk Cleanup - include old system files, delete/uninstall programs you installed but don't use. You can also move some programs or files to another disk.

Check you backup settings. You may have dozens of backups saved when you probably only need the last 3 or 4.

You may also have a windows.old file taking up a lot of space. Windows will automatically delete this after 30 days, but you can delete it manually if you are certain you do not want to roll back to the previous version of Windows.
 

My Computer

System One

  • Operating System
    W10 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    BrightWorks Systems BWS-6
    CPU
    Intel Core i5-6600
    Motherboard
    Gigabyte GA Z170-HD3
    Memory
    32Gb (4 x 8Gb) Corsair Vengeance DDR4-3000
    Graphics Card(s)
    EVGA GeForce GTX 1050Ti
    Sound Card
    Integrated
    Monitor(s) Displays
    Samsung S24E650BW x 2
    Hard Drives
    Samsung 850 Pro 256GB SSD
    Samsung 860 Evo 500GB SSD
    PSU
    EVGA SuperNova G2 550W Gold
    Case
    Fractal Design Define R4
    Cooling
    CM Hyper 212 EVO, 2 x 140mm FD case fans
    Keyboard
    Microsoft Wireless Comfort Desktop 5050
    Mouse
    Logitech M190
    Internet Speed
    >150Mbps
    Browser
    Edge
    Antivirus
    Microsoft Defender, Malwarebytes Premium

MiRaN1337

Junior Member
Local time
9:32 PM
Posts
7
Thread starter
I re-updated to 20H2 again. This thread has my exact problem but not for 5 minutes, mine is only like 30 seconds in the welcome screen and 30 seconds when the desktop shows and everything is unresponsive.
 

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    CPU
    Intel Core i7-4790K
    Motherboard
    Asus Z97 Pro Gamer
    Memory
    Corsair Dominator Platinum 4x8 at 1868 MHz
    Graphics Card(s)
    Nvidia GeForce GTX 1070-Ti
    Monitor(s) Displays
    Asus VG248QE
    Hard Drives
    Samsung 850 Evo
    WD Blue
    PSU
    EVGA 700B1
    Case
    Cooler Master HAF 912 Advanced
    Cooling
    Cryorig H7
    Keyboard
    Corsair K70 RAPIDFIRE - CHERRY® MX Speed
    Mouse
    Zowie FK2
    Internet Speed
    100 Mbits/s
    Browser
    Google Chrome

MiRaN1337

Junior Member
Local time
9:32 PM
Posts
7
Thread starter
I would generally recommend that you leave the system running for 24 hours to ensure all the background tasks are completed on a new install. If you wanted to try again we can certainly help you with any problems and walk you through the clean boot test if you need it after reading through the tutorial I provided the link to. It is possible that a driver needs updating or worst case is that your hardware is just not compatible with 20H2.
My PC has been running since yesterday and I still have the same problem I mentioned in the above post.

Yeah, I would give it a few days. Also, check to see how much free disk space you have on your boot drive. If low (I like to keep at least 20GB free - 30GB or more is better), then free up some space. Run Disk Cleanup - include old system files, delete/uninstall programs you installed but don't use. You can also move some programs or files to another disk.

Check you backup settings. You may have dozens of backups saved when you probably only need the last 3 or 4.

You may also have a windows.old file taking up a lot of space. Windows will automatically delete this after 30 days, but you can delete it manually if you are certain you do not want to roll back to the previous version of Windows.
I have about 200 GB free on my boot drive. I don't have any backups. I don't want to delete my windows.old because if everyone fails to find my problem, then my only solution would be to go back to version 1909.
 

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    CPU
    Intel Core i7-4790K
    Motherboard
    Asus Z97 Pro Gamer
    Memory
    Corsair Dominator Platinum 4x8 at 1868 MHz
    Graphics Card(s)
    Nvidia GeForce GTX 1070-Ti
    Monitor(s) Displays
    Asus VG248QE
    Hard Drives
    Samsung 850 Evo
    WD Blue
    PSU
    EVGA 700B1
    Case
    Cooler Master HAF 912 Advanced
    Cooling
    Cryorig H7
    Keyboard
    Corsair K70 RAPIDFIRE - CHERRY® MX Speed
    Mouse
    Zowie FK2
    Internet Speed
    100 Mbits/s
    Browser
    Google Chrome

philc43

BSOD Analyst
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Location
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Have you tried a clean boot yet to see if this makes a difference to the start up time?
 

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self-Build
    CPU
    Intel Core i5 3570K 3.4GHz
    Motherboard
    ASUS P8Z77-V LX
    Memory
    16GB
    Graphics Card(s)
    NVidia Geforce GTX 750Ti
    Sound Card
    On-board Realtek HD Audio
    Monitor(s) Displays
    Samsung 226BW
    Hard Drives
    1TB SSD + 1TB HDD
    PSU
    Corsair TX550
    Case
    Gigabyte IF233
    Keyboard
    Microsoft wired Keyboard 600
    Mouse
    Microsoft wired Basic Optical
    Internet Speed
    900MB/s
    Browser
    MS Edge
    Antivirus
    Microsoft Defender

MiRaN1337

Junior Member
Local time
9:32 PM
Posts
7
Thread starter
Have you tried a clean boot yet to see if this makes a difference to the start up time?
Well, that's the problem, I've got so many programs that would take me days to re-install. I would like to fix the problem without re-installing windows.
 

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    CPU
    Intel Core i7-4790K
    Motherboard
    Asus Z97 Pro Gamer
    Memory
    Corsair Dominator Platinum 4x8 at 1868 MHz
    Graphics Card(s)
    Nvidia GeForce GTX 1070-Ti
    Monitor(s) Displays
    Asus VG248QE
    Hard Drives
    Samsung 850 Evo
    WD Blue
    PSU
    EVGA 700B1
    Case
    Cooler Master HAF 912 Advanced
    Cooling
    Cryorig H7
    Keyboard
    Corsair K70 RAPIDFIRE - CHERRY® MX Speed
    Mouse
    Zowie FK2
    Internet Speed
    100 Mbits/s
    Browser
    Google Chrome

philc43

BSOD Analyst
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Member
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Local time
7:32 PM
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Cambridge, UK
Well, that's the problem, I've got so many programs that would take me days to re-install. I would like to fix the problem without re-installing windows.
If you read the tutorial there is no requirement to uninstall programs. You simply prevent certain programs and services from starting up by changing the start-up settings. I am not talking about a clean install. I am recommending a clean boot. They are very different.
 

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self-Build
    CPU
    Intel Core i5 3570K 3.4GHz
    Motherboard
    ASUS P8Z77-V LX
    Memory
    16GB
    Graphics Card(s)
    NVidia Geforce GTX 750Ti
    Sound Card
    On-board Realtek HD Audio
    Monitor(s) Displays
    Samsung 226BW
    Hard Drives
    1TB SSD + 1TB HDD
    PSU
    Corsair TX550
    Case
    Gigabyte IF233
    Keyboard
    Microsoft wired Keyboard 600
    Mouse
    Microsoft wired Basic Optical
    Internet Speed
    900MB/s
    Browser
    MS Edge
    Antivirus
    Microsoft Defender

MiRaN1337

Junior Member
Local time
9:32 PM
Posts
7
Thread starter
If you read the tutorial there is no requirement to uninstall programs. You simply prevent certain programs and services from starting up by changing the start-up settings. I am not talking about a clean install. I am recommending a clean boot. They are very different.
I'm sorry for the misunderstanding, I just did a clean boot and the same problem persists.
 

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    CPU
    Intel Core i7-4790K
    Motherboard
    Asus Z97 Pro Gamer
    Memory
    Corsair Dominator Platinum 4x8 at 1868 MHz
    Graphics Card(s)
    Nvidia GeForce GTX 1070-Ti
    Monitor(s) Displays
    Asus VG248QE
    Hard Drives
    Samsung 850 Evo
    WD Blue
    PSU
    EVGA 700B1
    Case
    Cooler Master HAF 912 Advanced
    Cooling
    Cryorig H7
    Keyboard
    Corsair K70 RAPIDFIRE - CHERRY® MX Speed
    Mouse
    Zowie FK2
    Internet Speed
    100 Mbits/s
    Browser
    Google Chrome

philc43

BSOD Analyst
MVP
Member
VIP
Local time
7:32 PM
Posts
150
Location
Cambridge, UK

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self-Build
    CPU
    Intel Core i5 3570K 3.4GHz
    Motherboard
    ASUS P8Z77-V LX
    Memory
    16GB
    Graphics Card(s)
    NVidia Geforce GTX 750Ti
    Sound Card
    On-board Realtek HD Audio
    Monitor(s) Displays
    Samsung 226BW
    Hard Drives
    1TB SSD + 1TB HDD
    PSU
    Corsair TX550
    Case
    Gigabyte IF233
    Keyboard
    Microsoft wired Keyboard 600
    Mouse
    Microsoft wired Basic Optical
    Internet Speed
    900MB/s
    Browser
    MS Edge
    Antivirus
    Microsoft Defender

MiRaN1337

Junior Member
Local time
9:32 PM
Posts
7
Thread starter
Thanks for trying that. Can you confirm if you have fast startup enabled? You will find this in the power options.

Yes I do have it enabled, I tried disabling it, same thing.

Edit: Now I can't even go back to version 1909, it says We're sorry but you can't go back. I do still have the windows.old folder, I haven't deleted anything.
 
Last edited:

My Computer

System One

  • Operating System
    Windows 10
    Computer type
    PC/Desktop
    CPU
    Intel Core i7-4790K
    Motherboard
    Asus Z97 Pro Gamer
    Memory
    Corsair Dominator Platinum 4x8 at 1868 MHz
    Graphics Card(s)
    Nvidia GeForce GTX 1070-Ti
    Monitor(s) Displays
    Asus VG248QE
    Hard Drives
    Samsung 850 Evo
    WD Blue
    PSU
    EVGA 700B1
    Case
    Cooler Master HAF 912 Advanced
    Cooling
    Cryorig H7
    Keyboard
    Corsair K70 RAPIDFIRE - CHERRY® MX Speed
    Mouse
    Zowie FK2
    Internet Speed
    100 Mbits/s
    Browser
    Google Chrome
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