I posted a link that tells you how to do it - in detail:
Now, when you do not ask about how to do something and then say, "That did not work," I would believe you tried that I would then try something else that is less likely to help but possible, because I was led to believe that the most likely does not work thinking you had tested it.
Please Respect the Troubleshooters and Our Time.
I agree, clearly RAM and additional software is not the issue.
That is mysterious why the mouse would show an odd 30ms delay... But that may be a flash in the pan. Unless it did that constantly, I suspect it not to be the sole cause of stuttering, much less able to cause a crash.
The Nvidia 4070, however... needs addressing by its maker: Nvidia.
It has known issues, some stemming from its Ada Lovelace architecture.
Display Issues: Flickering screens or black screens, especially on high refresh rate monitors.
Performance Degradation: Suboptimal performance with some games or applications due to poorly optimized drivers.
Fan Behavior: Complaints about unusual fan curves or coil whine, especially under low loads.
Hybrid Graphics Problems: In laptops with the RTX 4070 (e.g., Optimus setups), issues with GPU switching are more frequent on Linux.
I have not found anything specific between DRM and Nvidia 4070 at this time. But given its rendering issues, and that you have a specific error for Direct Rendering Manager (DRM), I would test the nvidia-drm.modeset=0 parameter.
Beneath all teh Advices that were giving her, I only want to ask for Clarification:
Because You use an Nvidia Card: Does Your System run in Wayland or Xorg Mode? Because in Zorin 17 it would be better when it would run in Xorg. To check that, go to Settings>About and look if there stands Wayland or X11. If there stands Wayland, try it with switching to X11/Xorg.
To do that, go to the Login Screen (not the Lock Screen). Simply reboot for that. On the Login Screen click on Your Profile so that the Password Field appears. It hast to be appeared. When it is apeared, You should see in the bottom right Corner a Gear Icon. Click on it and choose the Option ''Zorin Desktop on Xorg'' and then log in and test if it works.