Hi Howard,
I am experiencing the same problem at present. I put it down to the environment I operate in. Outside daytime temps are in the order of high 20s to low 30s at present. If like last year will be over 40 degrees centigrade.
One solution to your problem is make sure your room temperature is below 25 degrees ie you need to keep the room cool. My ultimate arrangement will be a dedicated room fitted with its own air conditioner set at 22 degrees centigrade.
Also, not knowing what your computer is, presumably a Windows based PC, hopefully not a laptop, due to the software being used, you need to ensure you have adequate cooling in the case not only for the processor but also for the power supply and additional case cooling.
Hope this helps.
Glenn