Hey guys, my apologies if I'm posting this in the wrong place.
I recently updated a virtual box host machine to Windows 11 and now one of my Windows 10 machines is crawling after a few hours of use.
I get good performance after a full reboot of the VM (sometimes about 10% of the time it's still incredibly slow to respond).
I'm running a pretty standard software developer stack of applications on this machine. MSVS2019, SQLStudio, VS Code, etc..
The guest VM has 16 gigs of memory, 4 processors, 128 MB of video memory.
The host PC is a Lenovo laptop, 32 gigs of memory, i7 9th gen with 6 cores at 2.6 base clock.
Battery conservation is turned off and set to performance mode.
Can you think of anything I'm not thinking I could/should do to improve performance?
Thank you VERY much.
PS: I am also sometimes losing support for my monitor's native 1080 resolution in the device manager which hasn't happened before..
This isn't an issue because I can get around this with fullscreen mode and or a restart. Just an interesting aside which might help isolate what my issue is.
[Solved] Windows 11 Host Update causing Windows 10 Guest slowness
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- Site Moderator
- Posts: 39134
- Joined: 4. Sep 2008, 17:09
- Primary OS: MS Windows 10
- VBox Version: PUEL
- Guest OSses: Mostly XP
Re: Windows 11 Host Update causing Windows 10 Guest slowness
You likely enabled Hyper-v on the host. That generally makes all VirtualBox VMs run slow, not just Win10.
See HMR3Init: Attempting fall back to NEM (Hyper-V is active). You don't have the error message, but the solutions still apply.
See HMR3Init: Attempting fall back to NEM (Hyper-V is active). You don't have the error message, but the solutions still apply.
Re: Windows 11 Host Update causing Windows 10 Guest slowness
Yup! I enabled Hyper-V to support docker and completely forgot that might even impact it.
I followed the instructions and it seems to be back to working great.
Thank you very much!
- Matt
I followed the instructions and it seems to be back to working great.
Thank you very much!
- Matt
-
- Site Moderator
- Posts: 39134
- Joined: 4. Sep 2008, 17:09
- Primary OS: MS Windows 10
- VBox Version: PUEL
- Guest OSses: Mostly XP
Re: Windows 11 Host Update causing Windows 10 Guest slowness
You're welcome. Nice to have such an easy one.