Hi Michael,

Thanks for your continued support!

My setup might be slightly unusual in two ways:

a) I'm using six 1920x1200 24" displays (3 columns, 2 rows) where the left two displays are directly connected to the video card (as usual) and the other four displays are connected via two "Matrox DualHead2Go Digital SE" to the same video card. Means, the OS detects two 1920x1200 and two 3840x1200 displays (forming a 5760x2400 desktop in total). The Matrox splitters are necessary because the Radeon RX7900XTX can only drive up to four displays. I temporarily disabled the outputs for the two DH2G so that there are only two 1920x1200 displays connected but there is no improvement.

b) The top three displays are operated in "inverted" mode because they are mounted upside down to have a thin bezel between the displays. I temporarily disabled the outputs for the two DH2G so that there are only two 1920x1200 displays connected and operated both displays in "normal" (not inverted) mode but there is no improvement.

BTW.: the same effect is observable for GNOME 44 with X11 and Wayland

I'll temporarily install V4 on a PC that has an nvidia card, just to make sure it's not an issue with the amdgpu driver.

Looking forward to try out the solution :-)

TIA and best regards

Bernhard