It works now.
By the way I'm not sure if it's just me but the game had a lot of tearing and even forcing it to run in a way that should literally make it impossible it still had tearing, probably because there's something fucked with the game itself. But I managed to fix it, I think.
I'm not sure if this is what worked but it stopped after I copypasted a few lines from the package.json from another MV game to this game's package.json
Opening package.json with a text editor you'll see a bunch of lines that are unimportant, what I did was replacing the lines below
"icon": "www/icon/icon.png" with this
Code:
},
"chromium-args": "--limit-fps=60 --ignore-gpu-blacklist"
}
I copied that directly from Karrin's Prison. The tearing is now gone and the frame rate seems stable now.
Maybe nobody else experiences this if you're plaiying from Windows, but on Linux after doing the necessary changes to make this game run natively it had that issue.