Ah ok, I will chalk this up to a reading comprehension failure on my part. Sounds like what I shared was actually the opposite of helpful. Sorry about that.

I gave up on Mint Cinnamon when I was trying to get my new build running due to persistent issues with tearing no matter what I tried. In my case, the issue appeared to be X11 so the recommendations I read pushed me to a Wayland based distro. After switching to Fedora Workstation (i.e., GNOME DE), I was able to easily enable VRR and HDR and now I never get tearing anymore; even with more graphics intensive games like CP 2077 and Enshrouded. Typically, I enable V-sync and/or a framerate cap and run games in fullscreen or borderless (preferred since it is less likely to freeze the display when I alt-tab).

I am not sure this is the minimum latency route as you mention but it solved 100% of my other issue and has been rock solid for gaming. GNOME seems to be a deal breaker for many, and possibly you as well, based on the comment about tiling window managers. Just figured I would share my own experience in the hopes it might be helpful.

Had this bad-boy since like 2015 and its finally starting to misclick on occasion. Shame I didn’t buy a backup and Anker stopped making them a while back since the DS-2368 was the best budget gaming mouse I have ever found for my hand size and grip. I have tried about 4 other models with similar profile and nothing quite touches it. Going to be a sad day when it finally gives up and dies. Similarly to what you mention, the Basilisk V3 is also the closest fit and it has decent linux support so that is my backup plan.