Users with full bandwidth (48 gbps) HDMI 2.1 will likely not encounter DSC unless using 4K 160+ Hz and/or 12 bpc.
Check manufacturer specs.ĭata rate is actual throughput after overhead, just multiply bitrate by 0.8.įor example, 3840 x 2160 (4K) x 120 Hz x RGB x 10 bpc has a data rate 32.27 gbps and if used over DP1.4a, will exceed the data rate of 25.92 gbps, and will therefore need to be compressed using DSC. If you have the option, you can try switching to a higher bandwidth interface.īitrate 32.40 gbps (Data rate 25.92 gbps)īitrate 24 - 48 gbps (Data rate 21.33 - 42.67 gbps) Until nVidia fixes this, the only way to avoid the alt-tabbing bug is to avoid DSC altogether by using a display mode that fits within the data rate of the interface. DSC is used when the data rate of the video signal exceeds that of the interface.
If you've noticed that you get a 1 - 10s black screen when alt-tabbing full screen games where you otherwise shouldn't (same desktop resolution/refresh), it is due to using Display Stream Compression (DSC) on nVidia GPUs.
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