[arupman]

In case someone stumbles onto this thread, Liam figured out the solution (which works for me too): Instructions here.

[arupman]

What videos have you tried? I tested with both regular use and a bunch of videos and everything is working fine so far (Big Buck Bunny 3840×2160 60fps was buttery smooth: Big Buck Bunny 3D – Download). HD Graphics 4600 only has H.264 and HEVC 8-bit hardware acceleration (no VP9 or HEVC 10-bit) so 2160p60 videos on youtube and 2160p 60fps 10-bit x265 videos were stuttering pretty badly for me (with CPU @ 100%).

[arupman]

This worked for me!

[arupman]

I was able to get the CAC-1170 to put out 3840×2160 @ 60Hz from Intel HD Graphics 4600 using Liam’s post. Using the latest Intel graphics driver (15.40.18.4380, doesn’t need to be the beta) you make a custom resolution for 3840×2160@60 Hz and use the CVT-RB timing standard instead of GTF. Then go back to the General Settings and 60p should be an option under Refresh Rate. Color stays at 32 bit. Tested with both regular use and a bunch of videos and everything is working fine so far (Big Buck Bunny 3840×2160 60fps was buttery smooth: Big Buck Bunny 3D – Download). HD Graphics 4600 only has H.264 and HEVC 8-bit hardware acceleration (no VP9 or HEVC 10-bit) so 2160p60 videos on youtube and 2160p 60fps 10-bit x265 videos were stuttering pretty badly for me (with CPU @ 100%).

It’s annoying that Intel Graphics uses the old GTF timing standard by default instead of the newer CVT/CVT-RB standard. RoyalKing, maybe you can convince your Intel contact to make their software at least pick the timing standard based on the EDID from the display rather than requiring a custom resolution to use the newer standard.

[arupman]

Worked for me! Thanks Liam!

[Author]

Posts