Awesome! Yeah I did PRAM and SMC reset earlier. How would I go about fixing the thermal paste or is that not fixable?
The whole Logic Board is removed, the old paste removed from the top of the CPU, and then you put on a good coat of new paste. Not a fun job but relatively easy if you have done it before. What is your CPU usage in Activity Monitor looking like? If the CPU just isn't up to par with what you are trying to do, then a new computer is in order.