Great program, but graphics card on fire

This program looks great! I was totally getting into it, but then my girlfriend came in the room and said, "What's that sound?" 'It's my computer" I replied. Then I put my hand by the fan and it was really hot. Then I sniffed and it smelled like burning.
So, while I love the program, I don't dare run it because I don't want to risk frying my computer. This overheating would sometimes happen with Sculptris, but generally I can run graphics programs without this problem.
Hope you can resolve this so I can experiment with the program. I've been doing digital impasto for about a decade, and your program looks like it has the best potential (assuming I can work large scale with it, at some point). I'm dying to play around with it more, but after even 5 minutes, my computer is just too hot.
Check out my impasto digital paintings if interested: http://artofericwayne.com/digital-painting/
So, while I love the program, I don't dare run it because I don't want to risk frying my computer. This overheating would sometimes happen with Sculptris, but generally I can run graphics programs without this problem.
Hope you can resolve this so I can experiment with the program. I've been doing digital impasto for about a decade, and your program looks like it has the best potential (assuming I can work large scale with it, at some point). I'm dying to play around with it more, but after even 5 minutes, my computer is just too hot.
Check out my impasto digital paintings if interested: http://artofericwayne.com/digital-painting/