[macOS Sierra] 10.12.1 poor Intel HD4600 performance

[stwkan]

Hi,
My system has been working well with 10.12.0. Full graphic acceleration (QE/CI) was working.

I was able to upgrade & boot into 10.12.1. However, few observations in my system: -

1) During boot, after the 50% boot status bar, the Apple logo becomes dotted lines & have some graphic artifact,
2) The second 50% boot takes much longer to complete!
3) Once boot up, I can see that full graphic acceleration is gone.
4) If I move any window, the graphic does not refresh until I click another window...!

It seems like Apple has made changes on supporting Intel HD4600 in 10.12.1. Do any of you encounter similar issues?

For now, I've reverted back to 10.12.0 in my hack. 10.12.1 is still on my testing partition.

System info: -
Motherboard - Gigabyte GA-H87-D3H
CPU - Haswell i5
Graphic - i5 built-in Intel HD4600

stwkan

 

[facepalm]

Haven't seen anything like that on my system. Using dual monitors (HDMI & DP), OS load time and graphics performance are the same on both 10.11.6 and 10.12.1 (on separate SSDs).

 

[stwkan]

All, Just an update. After a retry with the standalone "macosupd10.12.1.dmg" image file, everything is back to normal. Problem solved! My first attempt was direct install from Apple Store.