I've been trying to figure out an issue with my friend's gpu for a while now, and the issue is as follows:
According to him the issue occurs randomly, and apparently Vindictus is the only game doing it. I've only experience in Nvidia cards myself so I haven't been able to advise him much in terms of settings. I'm waiting for him to post a screenshot of the speccy summary, which I can provide later if necessary. The display is a Acer S221HQL.
I'm starting to guess the card/monitor/cable is faulty, but I'm open to suggestions