As I said, in cinema the movie rate is 24fps but is displayed at 3 times or more this rate by repeating the same frame, so there is no flicker. I also said in an earlier post that the OP cannot select 3840x2160 at 60Hz because the graphics card doesn't list this display mode, so Windows think is not possible and hide it. He has to add this mode as a custom resolution and then it will be available in monitor settings. Open Intel Control Panel, add this mode and then enable it. If using automatic screen timing doesn't allow you to add this mode, try using CVS-RB timing. My nVidia GeForce 610 GT can do 3840x2160 at 30Hz via HDMI, but the mode wasn't available by default. I had to add it as a custom resolution.
Seems improbable, but I can't pretend to know.
A GT 610 is an old (2012 launch), low-end GPU. I doubt that nVidia expected it to be used to drive UHD displays, even at 30 Hz. Maybe their drivers reflected that, even though that resolution is within the spec range for the card. Pure speculation.
The OP's issue could be related to using a TV as a monitor. The handshaking issues may make that more problematic than using a purpose-made PC monitor.
My Computers
System One System Two
-
- OS
- Windows 11 26100.3025
- Computer type
- PC/Desktop
- Manufacturer/Model
- homebuilt
- CPU
- Amd Threadripper 7970X
- Motherboard
- Gigabyte TRX50 Aero D
- Memory
- 128GB (4 X 32) G.Skill DDR5 6400 (RDIMM)
- Graphics Card(s)
- Gigabyte RTX 4090 OC
- Sound Card
- none (USB to speakers), Realtek
- Monitor(s) Displays
- Philips 27E1N8900 OLED
- Screen Resolution
- 3840 X 2160 @ 60Hz
- Hard Drives
- Crucial T700 2TB M.2 NVME SSD
WD 4TB Blue SATA SSD
Seagate 18TB IronWolf Pro
- PSU
- BeQuiet! Straight Power 12 1500W
- Case
- Lian Li 011 Dynamic Evo XL
- Cooling
- SilverStone Technology XE360-TR5, with 3 Phanteks T30 fans
- Keyboard
- Logitech K120 (wired)
- Mouse
- Logitech M500s (wired)
- Internet Speed
- 2000/300 Mbps (down/up)
-
- Operating System
- windows 11 26100.3025
- Computer type
- PC/Desktop
- Manufacturer/Model
- homebuilt
- CPU
- Intel I9-13900K
- Motherboard
- Asus RoG Strix Z690-E
- Memory
- 64GB G.Skill DDR5-6000
- Graphics card(s)
- Gigabyte RTX 3090 ti
- Sound Card
- built in Realtek
- Monitor(s) Displays
- Asus PA329C
- Screen Resolution
- 3840 X 2160 @60Hz
- Hard Drives
- WDC SN850 1TB
8TB Seagate Ironwolf
4TB Seagate Ironwolf
- PSU
- eVGA SuperNOVA 1300 GT
- Case
- Lian Li 011 Dynamic Evo
- Cooling
- Corsair iCUE H150i ELITE CAPELLIX Liquid CPU Cooler
- Mouse
- Logitech M500s (wired)
- Keyboard
- Logitech K120 (wired)