I was getting high GPU temps. 95C on my ATi HD4850
So, I took the card out, removed the fan, cleaned the large wall of dust that had built up in the heatsink over the years, Applied new Arctic Silver 5 thermal compound to the GPU/Heatsink. put it all back together..
I don't allow any of my gpu's or cpu's to exceed there normal speeds to casuse heat problems.. I'm running a simple
AMD FX9120 4.0ghz 8-core
ATI HD 7400+ 2gig card
Crazy part is my manual for the computer claims I can over clock the video card by 500ghz and I can over clock the cpu by 1.0ghz = crazy.
as of yesterday there is no way I can over heat anything in my pc due to this game. reason being is that it times out 24/7 now due to login issues. So on the good side STO is saving my GPU and CPU from heat relative issues.. Can I get a Amem!
I'm sure OP knows how to clean his rig, the problem is most likely V-Sync. There's absolutely no reason it should be off for the majority of software out there.
"Don't let them promote you. Don't let them transfer you. Don't let them do anything that takes you off the bridge of that ship, because while you're there... you can make a difference." - James T. Kirk
Not sure if you use the framerate limit option or if it's an issue for you, but it is currently borked and is always set to off whenever you log on. I have to set it to 30 to prevent my GPU from overheating since it's a low end PoS.
Several patches ago graphics options were all broken (which Cryptic knew about in advance and decided to push out to holodeck anyway, putting anyone with a low or mid range rigs at risk). That may or may not be a factor and you may want to review your graphics options and see if anything is out of the ordinary.