

Works fine
Didn't think I'd enjoy this with controller, but it's extremely enjoyable with both controller and KB+M
Binder R4 for R1 so it's easier to rotate items; it's more comfortable
There is no cloud save, just wanted to mention that
Such a great game. I suck at art. Like im REALLY bad. But this game has been such a joy to play.
Mostly fixed by a lower resolution
Wacom tablet works great after setting it to relative mode in cinnamon-settings > graphics tablet. In the game settings "inverted mouse clicks" needs to yes otherwise you can only use it to drag or pickup objects.
The only tinkering required is to set a proton version but other than that its just install & play! 10/10
Perfect out of the box, apart from drawing tablet support
Recently the game added support for Drawing Tablet, but this feature as far as I could manage was not wanting to work. The tablet works, taps on it do work, but the actual movement does not work, and the game says it can't detect it.
I've played the game for a few hours now, seems like everything is in order, nothing really is a major issue, but if you're looking to get the game namely for the drawing tablet support, as of now it's not functioning properly, either give it some time or just stick to mouse or controller.
Runs perfect out of the box with latest proton.
Another user report claims the tablet support is broken but this is not the case as it hasn't been implemented in the game yet. It is advertised as "coming soon" on steam page.

Runs passably, but advertised drawing tablet support is broken
Whether Steam Input is enabled or disabled, the game will pick up taps and button presses from a tablet stylus, but will NOT allow use of the stylus to look around or paint. This was kind of a dealbreaker for me, if not necessarily for other people.
Framerates can dip while moving around or doing intensive things; shouldn't get in the way of painting, though.
Sometimes fps drops down but in general it is fully playable
Every minute FPS drops down from ~160 to ~30 (on V-sync it is constantly unplayable)
Runs great!

Demo runs fine with "PROTON_USE_WINED3D11=1 %command%" as startup command