I'm experiencing a lag or more often freezing of PS while using any brush type tool, eg. spot healing brush, clone, reg. brush, etc. ever since the upgrade to CC 2015.5. I'm on a Windows 10 64bit system, when the freeze occurs I have to execute a (Ctr+Alt+Del), pull up task manager, then the systems frees up. Anyone having the same problem? More importantly, what's the fix, this is getting very annoying, I'm tempted to try an figure out how to roll back to regular CC 2015.