Cursor Disappears in 4.7 / Win 7 64 when working on RAM intensive projects

StratDragon

thread has been discussed but mostly from a Mac and/or Wacom point of reference, that does not apply in this case:

My cursor icon disappears when I start getting into 8GB RAM use for a single scene (sys is 12GB) and nothing else running in Win7 the cursor will disappear from the veiwport and not return. It comes back when I switch to desktop, once I tab or maximize DS it's still gone. If I have a a section of desktop visible when DS is open and I roll over that the cursor will appear in that non-DS area. Changing the cursor in Windows from the control panel does not remedy. I need to close DS and reopen or simply reboot but the behavior is far more evident with these busy and ram intensive projects.

DS4.7, Win7 64 Ult, nvidia drivers are up-to-date.