Yes I am working in video wave doing a multi camera edit and the audio is in sync while in the multi camera process. I don't recall having the problem in earlier versions only when I try and use the multi camera feature.
I think I already tried any video converter but I will try again when time permits.
My video card is ASUS ROG STRIX Radeon RX 460 4GB OC Edition AMD Gaming Graphics Card (STRIX-RX460-O4G-GAMING)
mother board is GIGABYTE GA-H110M-S2H LGA1151 Intel H110 Micro ATX DDR4 Motherboard
I have 32 Gig of ram
128 Gig SSD drive and 1Tera bite of regular hard drive.
This was a roll your own project.
As for your broadcast TV we are seeing that more in sets with some form of advanced audio processing and when a surround sound receiver is fed from HDMI 1. Some times sound lags video and other time sound leads video. Many manufacturers are now adding audio delay as either a customer adjustment or as a factory adjustment. Before retiring I repaired consumer electronics and am a Certified Electronics Technician.