Crashingtnt

If i play for like 2 to 3 min a glitchy thing apears in the left top of my screen and then after 20 sec it says it doesnt react dont look at all the screen shots i tried to capture the glitchy thing its on the top left if someone can help me Pleas its pretty irritating to just be able to play only 2 minutes every time And btw i dont have changed anything to the folder i just downloaded it and start playing