Hello.
I have the following problem with my mid 2010 MacBook Pro OS X version 10.11.4. Some time ago when playing YouTube on full screen it froze for like a second, then it was normal than another... like having one frame per every 4 seconds and after 10 seconds it started to play the video normally and smoothly. This week problem got worse. I can't watch some videos because I'm getting those 1frame per 3-4 seconds. It's unusable. However Safari and YouTube page works fine. Even sound is normal. Just playback is bad. And it happens not to every video. I see that this issue is when I watch somebody plays a game on a PC (stream or something similar). I watch always in 720p-1080p (no difference if 25 or 60 fps chosen). I updated Flash, updated OS X to the newest version, cleared the cashe. What can I do now?
MacBook Pro (13-inch Mid 2010), Mac OS X (10.7.4)
