Sensors causing stuttering / frame skipping and pointer lag

Hi I have an Alienware 17 r2 (2015) and I have the v5.05-2633 installed, everything was fine yesterday but today I noticed some strange lag and stutter, EC support is disabled, and everything, but, what I noticed today is that it wouldn't allow me to put custom spin numbers on the fan control, but only allows me to put 0, 2600 and 5200, anyways hope that helps