No issues with everything at default.
Played for the first time, specifically Remix, and had no issues. Ran perfectly and got through the first boss in story plus a combo over 400.
I did see others mention lag and/or long load times but I didn't experience any of that.
Works out of the box
Played initially at default settings. It was really fun, but I was a little disappointed by the long load times between scenes, and after dying. Overall the gameplay felt good, but just a bit slow when compared to the original game. Switching to older version of Proton fixes any long load issues, and the whole game runs so much faster
freezes for a few seconds (with proton 8.0-4)
When I first playing with default proton 8.0-4, there is a significant lag when scene changes, obtain collectibles, etc. Switching to 6.3-8 appears to have solved the problem.
Works perfectly fine
Only worth it if you can tolerate frequent lag - and really, in a game like this, you shouldn't tolerate any lag.
Noticeable stuttering during cutscenes. Long load times during scene transitions, including loading the game over screen. Game would freeze for a second whenever I unlocked a new achievement, or whenever I built up a combo of 100 hits.
No crashes, but plenty of aforementioned stuttering and lag.
Aside from some slowdowns, played great for the first 3 levels!
Game would freeze for a second when getting achievements and had abnormally long loading times for levels.
First run crashes after some minutes of tutorial, then insta-crash
Consistent freezes take the punch out of a normally fast arcade action experience. Makes the whole thing feel sluggish.
Unexpected but consistent freezes in and out of gameplay (while getting a combo of 100, while the game is transitioning between levels, after exiting out of the High Score menu)
Crashed once after completion of first stage, but has yet to crash since.
Some freezes may be acceptable if you're patient but the freezes during gameplay are hard to overlook. Unclear on if slowdowns are linux-specific as I do not have a device to test with, but have not seen reports of poor performance anywhere outside of linux circles.
The 10s delay between transitons sucks all the fun out of every failed attempt, every death.
Every game transition: Menu, video, level, death has a ~10s wait period while the game does nothing in the background.