Have a huge LAG after one hour of flight

[FalconPlot16]

i got smiliar problem after playing couple of missions the loading times are increasing sometimes some missions are impossible to play without restarting computer probably memory issue

[MoToad]

Bet my left nut it's the GPU. Your new one is gonna fix everything and increase your sex life!

[Looney]

Might also be temperature related, GFX card needs to work very hard and eventually throttles down, causing lower FPS. It might even shut down if it reaches a critical temperature?

[apolloace]

I am using a GTX650 (i-5, 8GB mem.) and playing with 1440x900 res, mid graphics settings.

 

Getting around 60 fps (down to 30 near big cities), but not much lag.

 

Rokomah, You can try-out using lower res., moving your way up as you notice improvement.