Also Adobe had a poll about this and the choices were 1) More features 2) Complete rewrite that will take time but will use modern hardware features and will be faster in the long run. The users chose the latter.
You could try trashing your preferences. That will usually fix some snags between updates. Hold alt (windows) or option (mac os) while launching Premiere.
There is no One True Level for day for night scope readings because there are a lot of variables to take care of. You’ll need to grade the picture so it looks like it should.
If you’re trying to deal with high resolution R3D footage on that GPU then it could be the case that your GPU is actually dying or can’t deal with the footage. I thought it might’ve been the broadcast exception warning but they shouldn’t show up on the clip thumbnails.