Blackout issue after champion slection

Currently,I have been having leavebusters due to a black screen error and I can't do anything about it and I have no choice but to disconnect.Having leavebusters due to this is very unfair and I have witnessed other players who have the same issue.Riot please I think it would be great to have a strong look up at this because it heavily affects gaming in League.Thanks for reading this and have a good day.