before you say something "that shows your intelligence"
convert 46 degrees celcius to degrees farenheit. Which yields 114 Degrees farenheit. That is a cool temperature.
Next.. before you say no nitrous viewport... Name your graphics card brand and model.
I see your desktop and think two things..
A. You have windows 7 basic.
B. You have UXSMS service off.
What can i assume? I can assume you have a poor graphics card, and windows basic.
Also.. 75 Degrees Celcius is 167 Degrees farenheit.. Please do cry when it is 200 degrees FARENHEIT.
What i can tell you about your problem...
If your on a laptop.. make sure your power settings are not on power saving.. make sure they are on Maximum performance.