this looks like a windows issue…
could also be the audient driver or a bad clock source?
if windows is feeling a bit stuttery in general, i recommend running THIS from an admin powershell:
irm “https://christitus.com/win” | iex
details on what it does here: The Most Popular Windows Utility
i use this on all the windows installs i put out at work (10+ per week) strip out all the garbage. its got to be a good starting point. i doubt this is a cubase issue.
even better, do a rebuild with the autounattend file in the root of your install media found here: GitHub - memstechtips/UnattendedWinstall: Personalized Unattended Answer Files that helps automatically debloat and customize Windows 10 & 11 during the installation process.
which will make windows feel like your computer cost you twice as much.
this is pretty aggressive and you may need to google how to turn a few things back on, but if this is a dedicated DAW it will be like night and day.
enjoy!
dave./