Lol,
Still don't know, why this warthunder is still mentioned. It is not comparable, you do not have the viewing distances, the lod, the behaviour of invironment. So it is not relevant to learn anything from warthunder, except perhaps some effects, when they run better. But how to evaluate, if the game runs in atotally different kind of genre with totally different goal? I bet, that due to its lack of details in every aspect, I will be able to run it at 60fps easily. It is a console game. Please do not compare complicated games with easy programmed games, which could be made with some web designers doing a different profession just for fun.
Sorry, but this is total fail to ever compare it. It is like comparing world of tanks with tiger vs t34. And its like asking, why tiger vs t34 needs more resources, although wot has better graphics (by the way: wot is fun sometimes, but the new reworked engine is a big szep back, although all the casual gamers do not see it technically).
Please leave warthunder, console il2 games and world of warplanes out of this sim forum, as they are a totally other world.