it's so long time i get low FPS when playing HS2, yesterday i try using "Lossless Scaling" app from steam, i try the Frame Generation 2x & Scaling feature from LS in HS2 (which is not exist in HS2 ingame setting),
the pros side is, LS increase HS2 maker & ingame FPS from 40-50 to 80-100 (Variable rate),
the cons side is i get a little bit ghosting effect (artifact) on the character when moving the mouse faster. and LS also a paid apps for 7$ in steam.
From my side it's better this way, than playing HS2 with low FPS.
My Spec: i9 12900 h, rtx 3070 ti laptop, ram 32gb (i don't know if this can work for other GPU, not try yet).