Slight but noticeable lag in Windows 10 guest

Hi all,
I've suddenly started getting slight but annoyingly noticeable lag with my mouse on my Windows 10 VM. I am on macOS 10.13.16.
I have done the following to try to fix it:

• Replaced battery on the mouse.
• Re-paired the mouse (bluetooth).
• Reset mouse options in Logitech Options app on the Mac.
• Applied all the recommendations on https://kb.parallels.com/112091
• Re-installed Parallels tools on the VM.
• Made sure there are no background processes on the host or VM running out of control / using high CPU.

Any suggestions are most welcome.
Regards,
Wayne

 

Did you check that the refresh rate isn't down to 24/30hz due to 4K monitor or similar?

 

I've got a 2013 non-4k 27" iMac, with no external screens connected.

 

Hi @WayneK1 , please go to Configure > Hardware > Mouse and Keyboard > Set it "Do not optimize for games" and check if that works.

 

Hi @Arun, I actually have already tried this but just neglected to mention it in my original post. I can confirm the setting is set to not optimize for games, but it still lags.

Thanks.