Agree.tonyw wrote:It certainly looks like a bandwidth limitation to me.
I can add that I also have a similar horizontal frequency, 98.76 kHz. I'm using 2560×1600×32@60 on a Dell U3011 monitor. My X1000 has a Radeon HD 6670, and my X5000 uses a Radeon RX 560. Both are connected with DVI DL cables into an ATEN CS1784a KVM, which is also DL specced, and of course with a DVI DL cable from that to the monitor.I notice that your H freq is very high - nearly 100 kHz. With 2560 pixels across the screen, that needs a bandwidth greater than (2560 x 100 k =) 256 MHz. That is pushing the bounds of the adaptor and cable, not to mention the specification of the DVI interface. Perhaps you need to attract Hans' attention.
And I don't have any of those distortions. I did have them back when I tried using regular DVI (non-DL) gear with that resolution.
Of course there may be an actual hardware fault with one or the other component in Quaros' setup, but otherwise I would suspect the DVI to HDMI adapter or some other issue around the HDMI part of the chain (since that is where the setup differs the most from mine).
Best regards,
Niels