GPS data from Racebox, smoothing speed?

opengl1

I'm combining video from my GoPro with GPS data from my Racebox, exported in GPX format. It's all working fine, but I notice the speed display is quite jittery, the value and needle are bouncing all over. You can also see this in the speed differential at the top left corner, it's almost useless it's so jittery. Is there any way to smooth this in the RaceChrono app?

Here's an example:

https://www.youtube.com/watch?v=z28tvncbUBI

Here's a link to the data from this session on Racebox:

https://www.racebox.pro/webapp/session/6a1caf7b4621780f3244441e

opengl1

I figured it out- needed to export my data in VBO format instead of GPX.