Odd behavior across multiple PCs

PC1 = desktop 9900k/2060 Win 11 Pro
PC2 = multimedia 4790K/1030 Win 10 Home
PC3 = laptop i3/HD5500 Win 10 Home
PC4 = desktop 7800X3D/4070 Win 11 Pro

The only common thing between them is my Microsoft account. This happens on all 4 PCs:

First problem is that when logging in, the language selector shows on taskbar, despite being hidden. I use US language for OS with another one for my keyboard. If I sign out and back in, the circle loading icon and cursor will stutter, I get to desktop and language selector is gone.

The second problem that I think is related to the first one is random stutters. Again this happens now and then on all 4 PCs. My sign in background is also black, even on the new PC.

I don't have account sync on and this started happening about 2 years ago on PC1, before I got the other PCs. I pretty much have up and accepted it, but when I recently got PC4 that have the same problem, it was just too much for me.

I hope someone got a solution.

If you use a MS account another commonality is Onedrive. You can rule your MS account and Onedrive out as being the issue by :
On your newest machine create another user account to test with. Make it a LOCAL account and give it administrator privileges.
Completely restart the machine (not sign out and in)and log into this new account to see if the problem exists.

For clarification could you describe a little bit more this condition you are calling stutter.
One other question. Are you using any 3rd party app that alters the GUI across these machines?

glasskuter said:

If you use a MS account another commonality is Onedrive. You can rule your MS account and Onedrive out as being the issue by :
On your newest machine create another user account to test with. Make it a LOCAL account and give it administrator privileges.
Completely restart the machine (not sign out and in)and log into this new account to see if the problem exists.

For clarification could you describe a little bit more this condition you are calling stutter.
One other question. Are you using any 3rd party app that alters the GUI across these machines?

Click to expand...

Hey, so I managed to narrow it down. The language bar thing is a Windows bug, many have it. Fixed it by disabling it in registry.

The stuttering circle on login and occasionally opening apps etc. is an Nvidia driver bug. People suspect it's related to all the different resolution options in NVCP and DSC. So there isn't really a fix for it, but at least I know it's not on my end.