[MC-72051] Minecraft screen kept flashing when I was clicking

When I click in minecraft, the screen says it not responding for like half a second and the logo on the bottom of the screen moves for some odd reason. This has never happened and started at 9/15/2014.
Video: https://www.youtube.com/watch?v=fXSbXxzYUBE&list=UU0bdoHHfKNkEs94h6fQZbrw

Linked issues

Dlawso the Really Lucky Rabbit 2014-09-18T20:22:40Z

Blame the modified client you're using. How do I know? You have ArmorStatus HUD on.

Nope, i re-installed MC and started with a fresh new MC, and if that WAS the problem, it has never happened before

Broken Intel drivers.

wait what? Help?

Nathan Posner 2014-09-18T21:49:10Z

Something kind of similar happened to me but myn is completely free of mods and was a lot worse

When i tried to download it, it says my system doesnt have the requirements, any help?