I have tried using both clients and have the same issue...the screen flashes. This only happens when I am running UO. I have updated my graphics card and this has not solved the problem...anyone have any suggestions?
Try enabling or disabling v-sync. What is your frame rate set at? Are you using a CRT monitor or LCD? You can get these odd screen refreshes if v-sync is enabled and your game frame rates and monitor refresh rates are the same or exact multiples.it's a constant flash that occurs in 10 second intervals (actually timed it)
I've seen other posts with similar problems running UO Assist, which seemed to have started after the last patch. If so, I would expect a patch in the near future.... scan from the 25th showed nothing & i can't remember when I 1st noticed this issue