If you wish to consider asset resolution
I suggest considering making your assets into vector pieces rather than raster (instead of PNG or WebM, try SVG)
These can be programmatically scaled in resolution so your players can scale it down as low as 144p to as high as 4k hd. I recall there's a phyton extension that allows you to use SVG ang tweak it
Having a ton of object instances at once no matter the resolution is ram draining (referring to the thoughts synthesis) specially if they are animated individually (I can see them swaying individually)I suggest instead of animating the instances, try the background instead.
Also thank you for hearing me out
I understand the part why there's no AS and back (they are hell to maintain XD)