I checked on a few mice myself, no problems. Maybe the issue is only for those still using the outdated Windows 10? In 11, native support for large values was added a long time ago, and the load issues from this have also been fixed. Has anyone tried connecting mice to USB 3.0+ ports? And why do you even need a high USB polling rate, it's not even clear.

Doesn't just happen in the menu, it just has a more noticeable effect there.

Happens when just looking around fast in a world, but it's just less of an effect (but still quite annoying! I tried those surfing worlds, and it just wasn't viable like this.)

Seems to happen even at lower polling rates too, it just has less of an effect.

I set my polling rate down to 125Hz and it still had a noticeable effect while moving it around fast.

Both with the menu open, and just in the world looking around.

Still tied to polling rate, as reducing it from 1kHz to 125Hz reduced the effect.

So:

It's even less noticeable while just looking around in a world fast, but it's still there.

And setting it to 500Hz the effect becomes more noticeable, even tho i wouldn't consider this a high polling rate.

(In fact 1kHz should be seen as a standard polling rate tbh, seeing as we nowadays have mice capable of 4kHz or 8kHz rates too.)

So setting your mouse to a lower polling rate isn't really an actual solution, it just reduces the effect, but the problem is still there.

Rust also updated to unity 6 and put out a statement on high polling rate

This is actually related to polling rate and not DPI, could you please check polling rate? If it's above 1k polling it will cause frame drops