I'm under the assumption that this issue was unique to me. If you all think it will happen for anyone then I obviously wouldn't sell it to someone else. Or I would at least tell them about the issues I had.
After playing MW 2 for the past few days with no crashes it seems clear that the GPU is the problem.
I'm going to sell it and get a replacement card. Which one would you guys recommend...
It's been 3 days I've been playing MW 2 without a single crash. I will continue testing but it seems like the issue is the 3060 RTX. I will report back after a few days.
The 3060 was used, but the PSU was new. I upgraded because my old PSU didn't have enough power cables for the 3060.
I have already gone back to the 1060 and will continue to see if I get any crashes this week.
I reinstalled the 1060 and was able to play MW 2 with no issue. I will keep playing it for the next week to see if it crashes. If not then the issue must be the GPU.