Do you have the same issue if you follow the OP’s steps to reproduce it?
Yes, using the sim for longer than 4 hours results in a significant drop in frame rate. Regardless of airport or aircraft. I will start a flight at 60fps and barely maintain 20 by the time I land.
Provide extra information to complete the original description of the issue:
DX11, Ultra preset, terrain LOD 300, motion blur off. 3900x, 64gb RAM, 6900xt, 2tb NVME, wired gigabit internet.
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