I did implement this
mks.rateLimitedWindowMaxFPS = 1000
for my workstation 9, running at least 3 vms 24x7
I did not want to speak too soon, because I just put this in last week, but so far I have NOT had a crash since using this line in my vmx file.
before using this, I would usually have one of my vms crash every 2 days or so.
-jason