Felix Miata wrote:

> What you wrote looks like a description, not a model number. Model numbers
> are generally required to ensure a item found is the item described,
> necessary to ensure one does not make the mistake of choosing to acquire
> that exact same badly behaving item.

DS-54303
https://www.digitus.info/en/products/computer-accessories-and-components/monitor-tv-video/hdmi-switches-and-splitter/ds-45303/

I will try to connect the PC directly to the monitor via HDMI and see if it
makes difference to probably exclude the HDMI switch. But it can't happen
today.

regards