Question RX 7900 XTX Sapphire Pulse Black/grey screen issue

Feb 10, 2023
I'm having a lot of issues with my new RX 7900 XTX. I have tried to look for some solutions but I haven't been able to find one. My GPU seems to be working fine but it randomly displays some intirmitent black screens that last for 2-5 seconds (I lose video and audio but the monitor doesn't display a "No Signal" message). I'm using a 4k 144Hz monitor (Agon ag274uxp) that works fine with other devices; the gpu looks to be working without these issues when I plug an HDMI 2.1 cable. I thought the issue might have been linked with my DP cable; I have changed two and I'm also using a DP 2.0 cable in order to have enough bandwidth for 4k 144 Hz Freesync.
I'll link my current build:
Can you please help me? I can also post some analytics if you need... Just let me know which one?