Yeah, i know that in Chrome the game seems quite unoptimized. In Firefox it seems it runs way better. Also on my macbook air it struggle a lot while on my gameing pc [from 4/5 years ago] runs way better.
I'll keep it in mind if and when i'm going to turn it in a finished game [i'd like to also re-implement the spellcrafting way better because there are a lot of other runes i didn't have time to add and some i could not add]. Let's say that this version has been made in 7 days so i'm not worrying too much about optimization, but you're definitly right!
Thanks for the feedback!