I have a new Mac mini m4 pro and an ASUS XG27UCS 27" 4K UHD (3840 x 2160) 160Hz monitor. I tried a HDMI cable that supports 4k@240hz and a USB C Thunderbolt 4 to DisplayPort cable that supports 4k@240hz. The monitor says it is operating at 160hz, but the refresh rate clearly looks like 60hz, especially when scrolling on websites and moving objects on the desktop.
What am I doing wrong?
Does turning on "High Dynamic Range" change anything...?
If not, you may need to upgrade the cable
to a short 3' high speed 8K HDMI to HDMI cable
or... to a short 3' high speed 8K USB-C to DisplayPort cable
Both cables are 3.3 feet:
HDMI Cable
https://www.amazon.com/gp/product/B08CWMTDKH/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
USB-C (Thunderbolt 4) to displayport
https://www.amazon.com/dp/B01J6DWK6I?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1
Those cables are good.
If turning on "High Dynamic Range" doesn't change anything...?
Then I suggest that you reach out to ASUS Support for further assistance.
https://rog.asus.com/monitors/27-to-31-5-inches/rog-strix-xg27ucs/spec/
Checking HDR just makes the colors worse, no change in refresh rate. Still looks 60hz.
What does ASUS Support or their Forum recommend for onboard Settings when that Display is used with a Mac.
I also tried a thunderbolt 5 cable:
https://www.amazon.com/dp/B0DH7CFG6H?ref=ppx_yo2ov_dt_b_fed_asin_title
Does not work. I will see if the Asus forums any help.
New Mac Mini M4 Pro says it's running at 160hz refresh rate, but clearly looks like it's 60hz
