Square artifacts on end of round screen

At the end of round screen I have a flashing square artifacts that persist for what looks like 1 frame, could be 2 but I can only record at 120 FPS, game is on a 240Hz monitor. I've also spotted these artifact on deployment screen, but they only appeared on the UI tiles, like for example weapon, gadget etc.
These artifacts never appeared during actual gameplay. Restarting the game fixes this for a while, but it is not a permanent fix, they will start appearing eventually again.

My setup: 
CPU: Ryzen 5800X3D
GPU: Radeon R9 7900 XTX, driver version 25.8.1, the latest one
RAM: 32 GB
OS: Windows 11, latest update
Monitor: MO34WQC2 3440x1440 resolution, played at 240 Hz, freesync is on, HDR enabled

DxDiag and screenshot with said artifacts are in the attached below.