(In reply to Brandon Wright from comment #55)
> Created attachment 142558 [details] [review] [review]
> Patch that "fixes" the problem.
> 
> I've attached a patch that fixes the problem for me. It copies parts from
> the intel patch and uses the existing async infrastructure for the cursor. 
> 
> It's really tiny, so I hope this is helpful enough to get this problem fixed
> quick.

Tested and solved for me on Polaris RX580. This also solves my stuttering with
TearFree, which makes possible to avoid using a compositor only for vsync.
Games that stuttered with mouse movement also fixed.

Review and push this asap as a fix, you are a hero.