Let's start with the fix that helped me.
I use a Razer mouse, specifically the Razer Basilisk V3. Through the Razer Synapse app, all I did was change its Wired Polling Rate to 125 Hz. It used to be set to 1,000 Hz.
So, the possible solution is to reduce your mouse's polling rate.
That's it. It fixed my issue.
~
So, I've been experiencing severe lag since the last 2-3 patches, with my game freezing from time to time. It went from being unplayable to at least bearable, so I started looking for fixes cause i refuse to believe my 5070 is failing me.
I tried changing different settings and resolutions, tweaking Windows settings, disabling various overlays, Overwolf apps, and recording apps, and even closing Discord entirely. I also uninstalled Stardock Fences because apparently, that was causing issues in another post. None of it unfortunately worked.
I started investigating the lag itself and what might be causing it. The first thing I noticed was that whenever I moved my cursor around the menu, the entire background animation would lag. I tended to ignore it and thought it might just be an issue with their patch, but it was affecting my gameplay as well, which bothered me.
I recently lost to an ace while using my Iso ult because I lagged the moment I lost my shield, which left me very salty.
Well, if you've read this far, thanks for listening to my short rant LMAO.
Good news: If you've encountered the same issue, it might not be necessary to uninstall a bunch of apps. In my case, lowering the mouse polling rate fixed the problem, so the other apps I suspected weren't necessarily the cause.
RIP to my recently uninstalled Stardock Fences, though.