So today i just got my MSI GS60 back from MSI (getting repaired), and when i tried to play some CS:GO, i would get like 100 fps at the start of a match but in like 5 minutes it would suddenly drop to 30fps. Before sending it to MSI i would get like 130fps constantly with maybe a few minimal drops here and there. But now when it drops to 30fps it stays that way until i disconnect and enter another match, and even then it stays at 100fps for a couple of minutes before dropping to 30ish fps again. Here are my specs:
Windows 8.1 64bit
Intel Core i7-4700HQ @2.4GHz
Intel HD Graphics 4600
NVidia GeForce GTX 860M
16GB RAM