[Solved] VM guest slow unless I interact with it

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rich-apex
Posts: 2
Joined: 27. Jan 2022, 17:48

[Solved] VM guest slow unless I interact with it

Post by rich-apex »

I'm not sure if this is a problem with the host, guest, or VirtualBox itself.
Host: Windows 10
Guest: Windows 8.1, 2 cores
VirtualBox: 6.1.30 r148432 (Qt5.6.2)

I run some GUI automation on the guest. It worked fine for years, until recently. Now, it frequently slows to a crawl unless I am actively moving my mouse over the VirtualBox guest window. Unfortunately, moving the mouse often interferes with the automation.
Any host/guest/VirtualBox settings that might cause this?
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: VM guest slow unless I interact with it

Post by mpack »

Most likely you updated the host OS recently and enabled Hyper-v.

Have a read of HMR3Init: Attempting fall back to NEM (Hyper-V is active).

In future please provide a zipped VM log: it cuts down on the need for guesswork.
rich-apex
Posts: 2
Joined: 27. Jan 2022, 17:48

Re: VM guest slow unless I interact with it

Post by rich-apex »

Thank you! Thank you! That article was exactly my problem, and following its directions to disable Hyper-V got me working at full speed again.
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: VM guest slow unless I interact with it

Post by mpack »

Thanks for reporting back.
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