This will help:
I had the same issue with HTML exports lagging with particle effects but this is a good fixHi, yes we already have looked at the problem. And i also saw the video. And it is clear that this is an issue of shaderparticle compilation stutter.
We are already working on improving the game in several ways and we will also implement a shader compilation step to fix these issues.
the problem was that for example on my Maschine 1080ti ryzen5600 i have absolutly no stutter/freeze with running chrome. So we only noticed it right at the end when one of our teammembers had the same problem and it seems to be way worse if you are running the game in firefox.
In the end we just didn’t had enough time to do a fallback solution (for example a Sprite Animation) or to fix it in time for the submission.
Thanks for bringing this up!