Dual Screen Svga mode issue

We have a 6.5 Horizon View instance and when users try to wake their computer up, one of the screens will stay off/black and the mouse moves weird. We can fix the issue by pressing control alt delete and then pressing cancel. Is there something that we need to do to correct this issue? We know that if we disable 3d graphics then we do not have the issue. I believe that it is a issue with running in Svga mode. We did not have this issue when we ran in vGPU mode but we don’t heavy 3d graphic users and we wanted to be able to vmotion. We are running 367.64