Chrissoa1994 Some people are very triggered by Windows 10/11 and/or modern GPU, AMD or Nvidia, such as you have. There is no easy solution to this problem. However, if you are using a modern Mac, as you say, 8 hours a day, just stick to that. Forget about using a PC. Some cannot use a Mac at all and can only use a PC, so I would consider yourself lucky here with an easy solution.
P.S. Nvidia GTX 1660 Super is not confirmed as a good card for all users. You can't buy that card with the expectation that it will solve GPU related temporal dithering.