Let me know the configuration of your PC. And also, how well does the Windows version work for you?
I run Windows 10. I played it in the browser. Would you like me to DL it and try to play?
I just think that the problem may be either in your graphics card or in the export settings. It's just that I don't think the problem is in RAM, since during debugging my maximum value reached only 180Mb
Also, I noticed that the performance in the browser of the game is slightly worse