We have struggled for some time with random black screens when users log into an instant clone session since moving to Horizon 8. Horizon 8 moving away from the SVGA driver has been the issue for us and support has had us install the 2106 agent to the master images (though connect servers are at a higher level) as it was the last version that still installed the SVGA driver. That mostly solved our problem. I just upgraded our connection servers to 2212 and the agent on the images was still 2106 and now the black screen issue has returned. This is not the black screen where the user gets disconnected after a few seconds, related to video memory, The user will stay connected as long as they desire to wait but the session is black and they can't do anything. I have just deployed new instant clone pools with the 2212 agent installed but also allowed the Tools install to push the SVGA driver and yes, I followed the install order of Tools, then the Agent. I have yet to see if this will correct the issue. The only other variable on the old images was a growing number of snapshots. I get conflicting information from each support engineer I talk to. Several times I have been told to not have more than 2 snapshots on the master image but removing earlier snapshots makes Horizon complain about missing snapshots. I have had yet other engineers tell me that yes, do not remove snapshots from a master image. What is the "best practice" regarding the number of snapshots on a master image and can a larger number cause performance issues on an instant clone pool? Should a master image be cloned first if additional snapshots are required after reaching a recommended limit?