Most of the year I don't need heat or AC. Only 1 or 2 weeks of above 79 degree heat. When it does heat up above 85, my PC gets hot. I have the side open next to a window. I open the window and place an area fan in the window blowing directly into the open side of the PC. All temps drop, no heat problems.
Download GPU-Z from here it's free:
http://www.techpowerup.com/gpuz/Run it and set it to log to file which will pop up asking where you want to save the file named: GPU-Z Sensor Log.txt
Save the file where ever you will remember it's location. Run Aces High for awhile to get the bad things to happen. Then exit out of Aces High and GPU-Z. If you have MS Excel, then rename that file.
GPU-Z Sensor Log.txt --->> rename to --->> GPU-Z Sensor Log.csv
Excel will be able to open this with nice neat headers and columns showing you all of your details over the time of your AH session. Or give it to Skuzzy to look at. It will show things like GPU load, total video memory being used, video card temperatures. Things like that. Might be a nugget in all of it to help figure out your FPS problem.
I've used this for years to see how my video card memory is being used by the game.