Question Audio Sync off from iPad to PC

[Phaetos]

I have a 2017 iPad Pro that I use to watch shows/youtube/movies etc, while playing games on the PC. I am using a Belkin Lightning adapter that plugs in and offers a port for power and an audio jack for output. Works just fine. I have the audio jack plugged in to the Line In on my PC mobo. This way I can adjust the input volume without having to only be able to adjust the main volume. But it seems to introduce a noticeable issue, audio sync is off with the videos. Just barely, but it's enough for me to notice and I don't like watching has become a badly dubbed audio track from an old Jackie Chan movie.

How can I fix this? I can't seem to find any settings for adjusting audio delay or such.

No I am not using an add-in soundcard, it is mobo sound.

 

[Mac29]

Since you're someone astute enough to think of driver issues, I'd maybe go with a hardware solution. If you haven't found anything through researching, maybe use something else or a different adapter?