It looks like you're using Xorg fractional scaling, so yes that will take the texture requirements past the limit supported by the GPU if you do it across multiple 4K monitors. Some parts of the desktop will cope and other parts (GTK) might not cope.
To confirm this, please run:
xrandr --verbose > xrandr.txt
and attach the resulting text file here.
Possible workarounds (you only need one):
* Only use integer scaling
* Only use Wayland sessions
* Use fewer monitors
It looks like you're using Xorg fractional scaling, so yes that will take the texture requirements past the limit supported by the GPU if you do it across multiple 4K monitors. Some parts of the desktop will cope and other parts (GTK) might not cope.
To confirm this, please run:
xrandr --verbose > xrandr.txt
and attach the resulting text file here.
Possible workarounds (you only need one):
* Only use integer scaling
* Only use Wayland sessions
* Use fewer monitors