I have had this monitor since december of last year (2024), has been really happy with it but experienced issues down the road and recently all due to DSC which started with my monitor not being stable at the rated 360hz 1440p at 10-bit colour depth - without going into a constant black screen (issue solved itself overnight but had to switch to 240hz 10 bit instead in the meantime, but this is still a sign of DSC acting up).
As the title states, like many other users out there (including me) would love to see a firmware update that includes the option through the monitor OSD to toggle On and Off Display Stream Compression (DSC) rather than having it automatically forced globally even when its not required (as an example, 1440p @ 240hz 10-bit has more than enough bandwith headroom to work without DSC on HDMI 2.1b which is roughly 30.77 Gbit/s of bandwith out of 48Gbit/s).
This option being absent alone is enough to push a lot of new buyers from getting these monitors and rather going over to other brands instead, with a quick google search reveals that it introduces a lot more issues than it does good.
Example of the most common issues (every user is experiencing and or has experienced these at some point):
1. Black screening on alt-tabbing and re-tabbing (this issue is further worsened due to stacking DSC ontop of the NVIDIA GPUs display streaming engine limitation that is present on all NVIDIA cards prior to the RTX 5000s series of cards (1000-4000 series all has this same issue) in-which exceeding ~32Gbit/s of bandwith usage triggers the split.
I'm on a 4070 Super atm using the provided HDMI 2.1b cable (48Gbit/s variant).
To summarise the limitation, older Nvidia cards (pre-blackwell aka their newest 50s series cards) uses a very limited display engine that could roughly reach ~32 Gbit/s on a singular head before splitting.
If a display exceeds that set bandwidth, the display is split into two halves on the renderer head as if they were two monitors. these two "heads" are combined before being compressed by DSC which further worsens the issues with longer black-screens (4-5 seconds typically) and even cases issues such as monitor temporary losing signal and going into standby - and or failing to start from wake too from sleep/hibernation.
This conflict mostly points at NVIDIA being the culprit, but the option for a DSC toggle through the OSD would truly help and solve most of the issues plagues users.
2. Due to DSC being enabled, DSR/Custom resolution and or DLDSR are disabled entirely which many users are actively using.
However they'll be enabled once again aslong as DSC is disabled.
NVIDIA has updated the display engine on the 5000s series cards with support for much higher bandwidth before the split (above 80 Gbit/s), hence why they don't have this limitation to begin with while using DSC (same goes for AMD cards) and don't have the black screen/wake issues either.
TL;DR
DSR/DLDSR is not available + alt-tabbing that results in black screens ontop of monitor not waking from sleep etc is all issues caused on NVIDIA cards due to DSC being globally enabled constantly on these monitors with no way to turn them Off.
Techie • PC-Enthusiast • Support
