Based on the data I’d say it’s likely a problem between the receiver and vesc or receiver and transmitter. Guessing this because your voltage stays pretty stable throughout the ride and the amperage is just plateauing at that point.
One other interesting thing in the data, at the point where the amperage takes a drop off the ‘temperature’ reading makes a little spike as well. I’m not sure where things start getting throttled for thermal control but 80C is pretty toasty for regular processors.
For comparison here’s my data from a ride a few minutes ago:
Can see the amperage is much more ‘granular’ looking never really levels off because the input is always changing a bit as my finger moves around. Also just noticed a big voltage dip in there, I hit a serious crack in the road and felt the board give out as it reset (one of my 2 5S lipos disconnected momentarily from the case)