This has to be an understatement. I know exactly what Prophet means.
This has been happening to me also on occasions, and I run a 5900XT Nvidia.
And 'no' my card is not reaching high temps.
The game will freeze up, although I can still hear the engine noises, then it will release and resume.
One other thing I cant remember, but Prophet didn't your game freeze up also at the same time mine did the other day/night when we were flying?
Cant exactly confirm this 100%, but I'll ask other players in game when it occurs again.
Also the stuttering issue is 'weird'. I saw this jerky effect happening when flying close in formation or taxiing during the first 4 or so flights of FC.
From now on, every server I join doesnt seem to be doing this anymore.
Of course theres the random FPS drop(6-7fps) every 2-4 secs, but the stuttering effect seems to have disappeared.
Ive asked others and they've noticed that the stuttering effect has been as noticable/there anymore either. Heh.. spooky.
Hope they get these isues sorted out soon.
Over and Out.