Audio out of sync between Edit and Color page

I am at a loss, both the internal and external audio is delayed (about 0.3 seconds) in the Color page relative to the Edit page in Resolve 15 beta 4.

Video is DNxHR HQX 4K@24, external audio is a separate 48 KHz 24 bit stereo wave file. Sources run on an NVME drive and the cache runs on a SSD drive, both drives have plenty of free space. Audio is going through an ASIO driver running at 48Khz sample speed.

System is 16 core Threadripper with 64Gb of memory using a GTX 1080ti.

Does anyone have any ideas what could be the cause? I am at a loss!

Found the issue, I had incompatible output setting for the Declink card, still it is kind of strange that the Color (and Delivery) page was influenced but not the Edit page.