Specs:
- Host OS: Windows 10
- Guest OS: Ubuntu 20.04.3 (of course, I’ve installed the VirtualBox guest package in the guest OS)
- 3D acceleration enabled in VirtualBox, 128MB (max) video RAM
- Host specs: Intel i5-8400, 16GB RAM
Symptoms:
- input lag
- visual lag
- screen tearing when dragging windows
- everything generally slow
I remember years ago, on a much worse PC, I could run a Linux VM through VBox that would feel snappy. Now I’m trying to run Ubuntu on a better PC and everything has enormous input and visual update lag.
The only difference might be that I now have a 4K monitor? However, I’ve set Ubuntu’s resolution to 1080p, and am running it in scaled mode as a window. I get slightly more acceptable performance in fullscreen mode.
What could be the cause of this?
