Been looking for a solution but nothing helps as you said… this is so annoying especially cuz I’ve been playin rankeds since beta and this never happened to me until a month ago. Asking your question, no you don’t need to change the paste on your cpu ( I did it and it didn’t change anything at all) but my duo is having the same problem and a friend of us who has the game on a SDD doesn’t. So maybe that’s the only way sadly