Export issue with synch

Hi guys. I found Shortcut last night and i’m loving it. I am working on a music video and it is almost complete.

When I play the video on my Windows 10 PC, the audio and video are synced how I want it to be. But on export the audio is horribly off from the video. Any suggestions as to what I could be doing wrong?

I checked the threads and found someone having a similar issue that they claimed was caused by their GPU. I am running Intel Core i5 2.7Ghz, NVIDIA GeForce GTX 1050 Ti, 12GB RAM, Windows 10 Pro. Exporting in YouTube mode to test. Going to try other modes, but YouTube is what I will need it for.