I came across an issue with Nurburgring GP Short. I went to run a short 10 minute race with the GT3 class & when I started the race session my frame rate was a slideshow. The screen would freeze for 3 to 5 seconds on a single frame before advancing to the next frame where it would freeze again. I didn't have this problem at all in the practice session. I exited back to the main menu, loaded a race session at Zandvoort & never had any issues at all.