Some 4K UHD TVs define 4096x2160 even though their native resolution is 3840x2160. This can cause scaling problems when games automatically choose the highest resolution or when using NVIDIA's Dynamic Super Resolution (DSR). This guide will show you how to disable 4096x2160 using Custom Resolution Utility (CRU).
4096x2160 can exist in these CTA-861 data blocks:
- TV resolutions
- HDMI support
- 4:2:0 resolutions
Edit the CTA-861 extension block:
Edit the "TV resolutions" data block:
Delete all of the 4096x2160 resolutions:
Click the "OK" button.
Edit the "HDMI support" data block:
In the "HDMI resolutions" section, delete 4096x2160 @ 24 Hz if it exists:
Click the "OK" button.
Edit the "4:2:0 resolutions" data block if it exists:
Delete all of the 4096x2160 resolutions:
Click the "OK" button on all of the dialogs. Then run restart.exe or reboot.
After following this guide, 4096x2160 should no longer exist. To revert all changes, run reset-all.exe and reboot.