Screen artifacting in GUI of Radxa Cubie A5E

I have booted the debain linux OS in SD card and using “sudo dd command” to copy the image file from SD card to NVMe SSD which is mounted in that board.
I have used radxa_bullseye_t8_output_512.img file in it. After flashing it and remove the memory card, it boots successfully, but why the GUI screen get artifacting when i run heavy tasks.

I experience this too, I think it’s because the software is still in Beta. Armbian should be available soon if not already which may fix this

same here when i play a video the whole gui flikers like crazy