hes rendering studs that are literally like really far away, using up tons of gpu power for a couple of pixels worth of detail in the distance, its ridiculous
this has no chance of running on browser, running on my pc im getting 25fps on high and ive got a pretty beefy computer keep in mind
mate its not a pc issue im on a 1660ti with 32gb of ram and an i7 9700k getting 25fps on high settings