New computer and the Adobe apps work worse than ever before

I have had a new computer for 2 weeks now. Here are the specs in a nutshell:

Intel Core i9 14900KF
NVIDIA GeForce RTX 4090
128GB DDR5 RAM

Since I've had this PC, Adobe applications have been working worse than ever before. Premiere crashes every 3 minutes, renderings crash 50% of the time and overall everything feels very unpleasant.
Premiere/After Effects really never, I repeat, never caused any problems on my last PC. It's just ridiculous.

For the record, the specs from the old computer:

NVIDIA RTX 3080
some AMD processor, not sure which one anymore
64GB DDR4 RAM

Does anyone here have any ideas/tips on what I could do or any thoughts on what the problem could be.

And before these answers come:

1. yes, I have enough RAM allocated.
2. yes, all drivers are up to date.