Then you can call yourself lucky, for me on 980ti, going thru HDMI over AV receiver is a pain in the ass. Every time Nvidia driver restarts it breaks HDMI handshake (which cause some application to freeze or die) and sometimes kill HDMI audio. That HDMI audio is super annoying because sometimes it's enough to disable and enable the device to recover sound, but in about 30% cases it needs a full restart. And I know it's not Windows, GPU, computer HW or AV receiver because I change each 2-3 times already but the problem is still there (and it does not happen with AMD GPUs I tried -7970, 280). That HDMI audio is super annoying because sometimes its enough to disable and enable the device to recover sound, but in 30% situations it needs full restart. I think delay is caused by mainly Hynix delays with HBM2 plus other things, including driver/power problems as you stated.