Not visible/refreshed objects or part of screen

Question

Do You know the situation when on screen in application you have not fully refreshed view? You need to hover the mouse on the object to make it visible/refreshed? Or You need to open close page/screen to refresh all objects?

I have PC-box with Win10. PC has only one DVI port, so extended the screens with USB to DVI adapter (3x VGA2725) and desktop is extended to 4 monitors. Each monitor is used to show the same software (SCADA) 4 different 'windows'. On the screens with adapters there is problem with view/screen refresh, like a 'artefacts' or part of screen not updated. In that situation the page needs to be closed/opened again. The CPU and disk is not overloaded.

Could You help me if above is more software issue or more hardware issue? Shell I look for bad drivers? What shall I check?

Answer 1

EDIT: sorry, missed the fact that the adaptor is multiplying the signal to all monitors.

Nevertheless, check with only one monitor at a time and different combinations to isolate is my suggestion.

PLEASE DISCARD THE FIRST ANSWER BELLOW..

Has the adaptor been tested on one of the other monitors?

If it has been tested on all monitors and the error is only on one of them, checking that monitor's specs, and the adaptor's specs; to see if there are any incompatibilities, is probably the best approach.

If no testing on a different monitor has been done, I would definitely try to isolate the issue by connecting the adaptor to all external monitors.

If you encounter the same error on a different monitor, we know it is most likely the adaptor, or it's drivers.