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Hi everyone, does somebody know how to get 60Hz refresh rate on macOS Catalina. I've connected my monitor via USB-C to DisplayPort cable, and all I'm getting is 30Hz. I've done a lot of research and non of the solutions worked out with macOS Catalina.
iMac 27", macOS 10.15
I have it fixed. I was trying to get this problem solved for weeks from now and I was in regular connection with Apple Support. The solution was in monitor settings not macOS. So in some monitor’s general settings there is an option to switch between 1.1 to 1.2 Display port. Try to find system properties or system configurations(in actual monitors menu, using monitors buttons) and in there you will find a Display Port or input setting where you can switch your Display Port to 1.2. Hope this will solve your problem. I was thinking it’s Catalina bag or something but the solution was easier and straightforward then I could imagine.
I have it fixed. I was trying to get this problem solved for weeks from now and I was in regular connection with Apple Support. The solution was in monitor settings not macOS. So in some monitor’s general settings there is an option to switch between 1.1 to 1.2 Display port. Try to find system properties or system configurations(in actual monitors menu, using monitors buttons) and in there you will find a Display Port or input setting where you can switch your Display Port to 1.2. Hope this will solve your problem. I was thinking it’s Catalina bag or something but the solution was easier and straightforward then I could imagine.
Same problem here and we're not alone unfortunately:
https://discussions.apple.com/thread/250715830
https://www.dell.com/community/Monitors/UP3216Q-60Hz-Apple-OS-X-Catalina/td-p/7391657
I'm hopeful this gets fixed in the next patch but it doesn't seem to be getting any attention.
Thank you for reply. Well my display supports 60Hz, and for me and all professionals in Video Editing and Motion Graphics fields the 30Hz refresh rate is not worthy. For example you can work with video materials captured in 60 frame per second and with 30Hz you're losing a default picture smoothness, and this is just one of the reasons. I've checked the specs before even buying the iMac and I was running my display on MacOS High Sierra with 60Hz refresh rate so I believe all the problems because of Catalina.
From Apple's page for the iMac:
One 5120‑by‑2880 (5K) external display at 60Hz with support for 1 billion colors, or
Two 3840-by-2160 (4K UHD) external displays at 60Hz with support for 1 billion colors, or
Two 4096‑by‑2304 (4K) external displays at 60Hz with support for millions of colors
Most external displays support 30Hz refresh rates. Why do you need 60Hz? Look at your Macs specs. What does it support for external displays?
External display do not have 60Hz Refresh Rate
