well my suggestion would be to get your money back but other then that for the overheating make sure it is not to close to whatever you have it sitting on like make sure it is suspended a little because a lot of laptops have vents on the bottom and when to close the the resting place it may overheat other suggestions about it is find the vents and make sure they are not covered or blocked by anything. clean the vents form any dust, and maybe open it up and take a look at the other accessories down in there and make sure there is no dust. also for the choppy game-play i would look to see if it has upgradable or (expansion) slots for more hard drive storage, and also for the graphics cards and if it has no more expansion slots i would once again return it for your money back lol not worth it. anyway hope this helps