1/200 sync problem with Nikon D750
My current setup is using a Nissin Di866 Mark II Canon compatible on my V6 trigger with the correct Canon profile and using a v6 as the trigger on my D750. I've noticed that all shots fired at 1/200s have part of the shutter curtain in the bottom of my picture. When I change the speed to 1/160 or lower this is not a problem.
If i test and put the flash directly on the Nikon hotshoe I can shoot at 1/200 all day without this problem. Is there a problem with my units or do I lose 1/3 of a stop of shutter speed using these triggers?