Just some good news regarding this driver 3345. I built a new PC for my boss this weekend using:
ASUS H87-PLUS
Intel i5 4670 ( HD4600)
Windows 8.1 OEM DVD
Windows 8.1 installed fine with the 3316 driver, however the HDMI audio was not working (Error 10)
After installing 3345 the HDMI Audio was corrected and everything is running great since. HDMI Monitor sleep/resume works fine.
I do not have a 3d party graphics card, so I cannot comment on those issues. Thanks for your continued support with everyone's issues.