I also use Dean Zwickel’s software, but I subsequently developed a post-processing workflow for GPX tracks. This workflow involves importing the respective GPX track into an Excel worksheet, where I then edit and supplement it using Excel. I originally developed my workflow for an Insta360 X3 and later adapted it for the Osmo 360. I spontaneously wanted to buy a GoPro Max 2 myself, but the retailer didn’t have it in stock. Since it was a spur-of-the-moment decision, I didn’t want to place an order. My Excel workflow could be applied equally well to GoPro Max GPX tracks; compensating for any time lag would be very easy.
Ref: No more GPS stress thanks to navigation using video frames