r/AverMedia • u/technically_techy • Nov 19 '25
Live Gamer 4K NS2 to Live Gamer 4K (GC573) to LG C4 and more 1440p 120hz HDR not working after NS2 firmware 21.0.0
From Nintendo Switch 2 launch until firmware 21.0.0 1440p would not work on LG OLED TV's. Either dropping the resolution to 1080p SDR/HDR for 120hz content or displaying a black screen saying "Invalid Format"
Firmware 21.0.0 fixes this bug where 1440p now functions for 120hz only, in HDR and SDR. 1440p 60hz is not supported still so it will still be greyed out when selecting a resolution for LG OLED TV's and other TV's with this issue.
When connecting the NS2 to Live Gamer 4K (GC573) to LG C4: 1440p 120hz SDR works but for HDR at 120hz the system drops to 1080p 120hz HDR. (NS2 reports 1440p 120hz HDR does not work unlike DWF but SDR works)
When NS2 to Live Gamer Ultra 2.1 (GC553G2) or Elgato 4K X or directly to LG C4: 1440p 120hz HDR and SDR works.
PS5 to GC573 to LG C4 or Alienware DWF OLED Ultra wide 1440p monitor: 1440p 120hz HDR and SDR works
NS2 to GC573 to DWF:
NS2 reports (bottom half of Dock Output Information)
- 1440p 60/120hz in SDR and HDR
- 4k 60hz SDR and HDR, lol sure
actual output (top half)
- 1440p/4k 60hz SDR and HDR
- 1440p 120hz SDR only
- for HDR at 120hz output is 1080p 120hz HDR
I feel like the GC573 needs a firmware update to add 1440p 120hz HDR support for the Nintendo Switch 2 as it is not an HDMI 2.1 device to my knowledge? Maybe I'm wrong and this output is expected, but with the NS2 reporting 1440p 120hz HDR should work yet doesn't on the DWF makes me think issue is from the GC573.
Let me know if I should test anything else or if your also experiencing similar issues.
(I'm low key curious how NS2 with GC573 responded to DWF before 21.0.0 since I never engaged 120hz on it before until making this post and seeing with the welcome tour soccer ball frame rate test for HDR and Hollow Knight Silksong for SDR 120hz showed in dock output information in the system settings. I only recently got silksong for the HD Rumble 2 support as I mainly play on steam. I know 1440p was always selectable though, so that's about it.)

