What is the evidence that your phone is overheating? Your screen shot shows a temperature of 50C and an apparent peak of 70C. If you had looked at existing posts on this subject, you'd know that these temperatures are well within the normal operating range..
You need to spell out your assumptions and provide a lot more information. Do you think 50C is overheating? What temperatures do you see when transcoding a movie, gaming or some other processor intensive activity? Are you using a bunker type (very thick) case? How long does Instagram keep the processor busy after you stop using it?
Do you have any reason or evidence of corruption? Did you experience any system error messages and if so what were they, verbatim? On the basis of the limited details you posted nothing is wrong, your phone didn't overheat and you have no reason to be concerned.