It was a friend ' s problem , not mine . As far as I know she no longer wears braces but before it was a full time thing , day and night . Tendinitis is NOT to be underestimated however and you will seriously end up in pain even when trying to eat dinner if you don ' t change your habits ASAP once it occured . It doesn ' t mean you have to give up on on your hobbies though , given enough time your hands will recover . Just that you must apply all possible countermeasures immediately , decrease time spent writing on your keyboard and possibly change your keyboard altogether , start doing stretching exercises , avoid lifting anything , look for alternatives to mouse etc . Let it slowly heal back up . <| sep |> Thanks . Should add that I mostly play single player games And watch Movies so I am not so sure if the input lag is Even noticable for me .