Hi, Resolve Studio v14.3/Win10Pro/z840/Raid drive for cache/ Decklink 4k Extream v10.9.11 software but also happens v10.9.7 connected SDI to a FSI monitor.
Since going to v14 I have noticed a 4 frame sync issue on playback. happen on edit and/ color page. 1080p/23.98
It's been noted before. You'll need to find a way to delay the audio. There are dedicated devices which do it, or a free sound delay plugin from Voxengo may be worth trying. Also, consumer receivers with HDMI in/out often have audio delay settings in ms, though you could run into HDCP issues with a receiver.
"Known" in the sense that I've mentioned it here a few times and passed it on to BMD tech support. I see 3 frames out. Whether it or not it's universal on Decklink cards, I don't now. Less than 3 frames may go unnoticed if no one's looking for it.
Oh, lord. Don't shift the audio, what a headache. I use the Voxengo plugin, installed on the Fairlight main output. Works fine. Just remember to turn it off, when you export.