some have claimed higher temps or unstable overclocks (CTDs which were otherwise stable previously).. heres an article i found and there has been a cacophony of voices on reddit
The new drivers address the black screen issues that some users were facing and they also bring some performance gains in synthetic benchmarks. But these gains seem to be negatively impacting gaming performance.
www.notebookcheck.net
the 22mhz idle state piqued my interest as well
i like to clean boot into drivers, too much work unless the thing is really as good as they say