The snow only appears on floors if i'm very close to it and at certain angle , and it does not appear on rooves at all.
There's also problem where the tall grass and other shrubbery is still green ...
Ideas
Omg ty so much! turning off laptop mode worked.. also sorry for tagging incorrectly.
If your game gets choppy, you might need to turn it back on but at least it's clear what's causing it now :D