CPU is non OC'd i7-4770K w/ 12GB RAM (mushkin redline ... i think?? I don't remember honestly).
oh boy, that's no good..
You don't want mismatching ram.. it introduces extra latency due to the non parallel memory channel configuration
the 4770k should do 300 out of the box.. might be some spyware on there..
See if you can bump to 4.2-4.4ghz on stock volts.. , unpark cpu, lock to 100% during gaming, use timer-resolution to reduce latency..
Up the volt to 1.355 and try 4.7-4.8.. it's important you unpark,, and also turn off all the power protection/ power gating in the motherboard..
if you got one of those boards that scale back active vrms , turn that off too..