I have bougt the expansion yesterday evening and did a flight from eham-kjfk without any problems but then on the way back i tried the time compression function up till 4x timecompression there are no problems but then is selected the 8x timecompression and the plane starts turning and it can't keep the flight path and the instruments says its turning without turning the plane can anyone help me please it'sreally anoying and it cant keep the altitude either when at 8x timecompression

Yes, I have this issue too. 

I'm currently running a clean install to see if this helps at all.

I already tried a clean install - made no difference. Tried running a flight with no weather - made no difference. Going to try running a flight without any controllers connected to see if its something controller related. For now though it's exactly how you describe. Everything's good up until 8x sim rate. Then the plane starts weaving and eventually turns completely around even though the navigation display depicts you still heading toward your next waypoint. Also considering disabling FSUIPC to see if something there is causing an issue.

 

Paul

Same here! :(

Same here! Impossible to come up to 8x or 16x

I hope this will be an easy fix  :mellow:

Going to link in the other thread where we're discussing this issue in hopes that it gets more attention. Just tried a flight without any controllers connected besides my mouse. Still cannot simulate above 4x. Here's the other thread.

 

http://forum.avsim.net/topic/446758-problems-with-time-compression-8x/

 

Paul