Just got a brand new SSD earlier (a 960GB Kingston A400) and I'm just installing a few games onto it. But then after installing two games, the write speeds dropped to at an average of about 8-12 mb/s, and both the active time and average response time hovered in the really high values (90-100% active time, 2000-22000ms response time). AHCI is enabled. What could be causing this?