this is really strange, because for some it works and for others not.
for me it works perfectly without having to mod anything. no lags, nothing. but I don't have random reboots, dead pixels, a loose usb port or any other flaws either.
a friend of mine is experiencing lags all the time. it got way better after modding. also he had random reboots before pr1.1 and so on...

don't know why...