Its a CSV file and as you said, has GPS timestamps (in GMT I might add - not the local time but adjusted for that to match up to the videos). Signal was 3-4 on GPS. I guess the 1Hz may limit accurate lap times as it must make assumptions in between the two readings to estimate at X time the Start/Fi...

So Ive exported the files from Harrys to csv etc and got them on my PC alongside GoPro videos triggered seperatly. Im trying to overlay them both within RaceRender. The laps were 6-8 per session. I can sync 2-3 then it goes out by 5 plus seconds at some point and gradually looses all sync. Ive got 5...