I get systematic 1 second pauses when approaching airports, like some big data package was handled by CPU. Since SU11, in complex airports like London Heathrow or N.Y. JFK, heavy stutters when flying over buildings like 0.1 sec stops every 5 sec. This problem is stable and recurrent. Refresh rate is set to 30/s with Vsync ON (33ms/frame). Mainthread is fluctuating around 30ms. In order to increase margin vs. 33ms to reduce stutters I had to lower both terrain and object LOD downto 100, and disabled trafic. (by the way, AI trafic gave worse stutters than live trafic).
Win 11, Ryzen7 3700X, RXT 3070, DX12.