Hello, thx for your help ;-). I could fix both issues.
a) After reinstallation and Vanilla FL HUD option I had the values on my HUD
b) Frame stuttering has been fixed by setting the shader option to "ENB Standard". By using Vanilla FL Shader the problem was still there.
But now i observed two further problems xD:
a) I am not able to bind Shift, ctrl or alt. Can i bind the keys somehow else?
b) There's still some stuttering (low fps - just like normal stuttering when your hardware sucks^^) and my GPU usage sometimes raises up to 90%. I am wondering, cause I am using a HD 7850, a i5 cpu and 16gb RAM- this should be more than enough for playing FL xD...
Greetings,
Schnirke