I upgraded long ago to Windows 10 under the free offer. Right now the entire surface feels "slow", battery life seems terrible. My thought was to just do a "refresh" and start over. However the recovery partition is still windows 8 right (that is what it care with). So if I do this, must I upgrade to win10 again? Is ti best to just use media creation toolkit and do a clean in stall from USB? If I do that (or a refresh) will Win10 get all the correct drivers?