if your nickname is same, Im pretty sure I have been playing games with you like 2-3 days in a row?
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I think it didnt happen before, but is something new.
This week a guy approached me with same/similar problem. And he replied to me as: 'i turned off open gl mode in client and its working'.
Try that, if it wont solve Dracolich probably will need crashlogs since he asked crashlogs for this guy.