0

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?

Improve this question
4
  • Looking at the Performance tab of the Task Manager (while running the VM), is anything maxed out (e.g. cpu)?
    – Gantendo
    Commented Nov 26, 2021 at 18:27
  • @Gantendo (edited in the specs, intel i5 8400 & 16GB RAM) -- my memory seems to be maxed out for some reason
    – jcora
    Commented Nov 26, 2021 at 18:31
  • Look at what is consuming the RAM. Perhaps you can assign less RAM to the VM. i.imgur.com/GY0DoAz.png It might be wise to buy some more RAM anyway. Or borrow some (if possible) and check if it solves the problem.
    – Gantendo
    Commented Nov 26, 2021 at 18:32
  • Yeah I tried to look at it, but no process was consuming anything that could account for that used. But I fixed it with a random guess. I disabled the Hyper-V Windows feature. Apparently that reserves 65% of your system RAM for some reason lmao. Still the same thing with my VirtualBox Ubuntu VM however.
    – jcora
    Commented Nov 26, 2021 at 19:07

1 Answer 1

Reset to default
2

I just installed VMWare Player (which is free of charge). Everything works smoothly straight out of the box. 4K resolution as if running natively. Neither Hyper-V nor VirtualBox approached anywhere near this level of performance, I'm impressed and recommend this to anyone reading this post.

Of course, I'll accept the answer that actually answers the question if someone posts it, but this solved my actual problem.

Improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .