Lauda89 Another update: I tried the samsung G8 OLED with the 7900X and with the 1660super but the situation is still the same: dizziness.
Desperate, I decided to change the 7900X and motherboard with a 13700K. Because i can use the Accenture PC with W11 21H2 + i5 1145G7 with the uperfect 17" portable monitor and my old CCFL.
So i changed the MB, the CPU, installed W11 21H2 but nothing change, still sick with every monitor i got.
The iGPU is different to be precise because the 13700K has a UHD 770 while the 1145G7 has the Xe. Maybe this is the reason but I am beginning to think that the motherboard plays a very important role.
The old perfect PC (1700X+RX 480) I "destroyed" it two weeks ago by updating the motherboard bios for the purpose of changing the CPU. Putting the old bios back didn't fix the problem.