after Tiger penetration and range got buffed, IS2 needs some sort of buff too, like adding some 160-200 extra hp.
Also both Tiger and IS2 could use a price increase to 260 fuel
Lets assume that in vacuum to have 50/50 chances vs Panther you need 2 t34s(in real situation probably 3, but single t34 is also better vs infantry than a single Panther), so in terms of resources its 490/175 vs 600/160. Imo it could be better balanced if t34 had cheaper mp price and higher fuel price, like 260mp and 90 fuel, making it 520mp/180fu needed to have a 50/50 chance vs 490/175 Panther.
Did you run other games and grafic tests?
You need to be sure that its problem with Coh2 and not your card.
But I will not be surprised if problem is coh2
Totally agree with everyone here. This feature is very annoying and needs to be reverted. Using hotkey for reverse and right click for forward mevement is much, much easier