active Autogen lights not laoding

[Aristo]

Hi all, 

 

recently upgraded my GPU to a 1080 and am reaping the rewards in terms of frame rates, however since the upgrade I have been struggling to get the Orbx global lights to load. It is absoloutley fine when I load up at my departure airport but once away from it and in the cruise and finally into the descent I can only see road lights and no autogen lights. this happens right up until a few hundred feet off the ground when they appear but only in patches and not far enough to look good. 

 

Hopefully someone can shed some light on this, 

 

Many thanks