I have a Lenovo G505S, the CPU frequency was stuck to 1.9 GHz, I tried to overclock it with AMDdrive but this is not possible I set a higher frequency and this is somehow rejected, I installed Lenovo power management and switched it to high performance the frequency immediately turned into 2.3 GHz but after some time is stuck to 1.77 GHz, I de-activated turbo-core and went to 1.86 GHz, how can I overclock my laptop to work at 2.3 GHz to 2.8 GHz as the manufacturer states?