No VSync after updating inspector and NVIdia driver 301.42-301.48

Hey there,

After the recent updates of the NVidia Inspector and the new 301.42 and 304.48 drivers, I cannot seem to get the performance I used to with the older drivers and inspector. Most noticeably is the horizontal lines and tearing that I experience now with that 2 second microstutter. I have Kostas setup and utilized that 1/2 refresh rate with locked frames in game. I have done clean installs with both 301.42 and 301.48 respectively. My Inspector files are all in the same folder as before. Any ideas? Anyone else noticing poorer performance with the new drivers/inspector? I completely turned off VSync at one point to see how much help having it on was. Unfortunately I noticed no difference so it seems to be that VSync isn't even activating.