micro stuttering, only with F18 Hornet

[Lenux]

I tested many aircrafts, like F86, F5E, MiG 21 / 15, Bf109 k4, Fw 190, F18, Mustang, Spitfire, etc.

The map was Caucasus, for all. Same location, time, date, clouds, mirrors off, etc.

With F18 Hornet, i have micro stuttering, and that's the only aircraft with this issue

Does this happen because of the detailed cockpit?

[Goa]

Try to lower the shadows, put them both on flat and report back