


Works better on Proton than native Windows; but performance is quite bottlenecked.
Performance is poor but if you disable shaders it becomes playable.
I wasn't even able to launch the game on Windows, so Proton working as well as it does is miraculous.

Прошел игру. Ни глюков, ни багов не заметил.
Found no issues
Works great out of the box
It’s kind of enjoyable, but the slowdowns are very irritating. Turning off the two extra shaders helped.
The game drops 15-20 fps when a lot of fire is on the screen. And it drops down to 3 FPS when showing the particle effect when acquiring a new ability.
It crashed once (together with Steam) at the end of the first burning stake cutscene in the prologue. My Steam Controller kept on vibrating, then crashed with the game. Had to restart Steam AND hard turning off the SC
Huge FPS drop with proton 6.3-4
Crashed to desktop every few minutes with proton 6.3-4
Full play-through with a DS3 controller
Extremely low FPS during the animation for a newly acquired ability but it only lasts a few seconds and doesn't impact gameplay.
Fps drop when obtain new magic
Works perfectly fine. No issues.

Steam Demo Crashes on Launch
FATAL ERROR in Vertex Shader compilation ShaderName: sh_fd_advect_velocity_0_glsl
memory:61:22: error: syntax error, unexpected NEW_IDENTIFIER
called from - gml_Script_fd_rectangle_update (line 19) called from - gml_Script_fd_rectangle_update_view (line 77) called from - gml_Object_obj_fd_example_main_ext_Step_2 (line 37)
FPS issues, otherwise fine.
Noticably low FPS when fire effects are on screen. Disabling the Fire Shaders in the options did help it somewhat, but I wouldn't call it a good experience overall. Probably requires some tweaking for now, but I would expect that from a title that was released one day ago.

The slowdowns are significant, but with the tweaks they aren't so bad as to make the game (which is nice!) unplayable.
During graphical lag, inputs are often dropped.
Performance significantly degrades when you're holding fire (flame being on screen has less of an impact). The game also slows down to a crawl when new (fire) abilities are unlocked.
I've tried disabling the "Dynamic Fire Shader", "Heat and Water Shader", "Extra Particle Effects" and "Vertical Sync" options. This seems to have helped a bit with the former (the slowdown is closer to ~50% instead of ~75%), but not much with the latter.
Thankfully there is a fairly limited amount of new fire abilities to unlock.