Evolve Carbon GT getting kicked into Eco after a few minutes on GT mode

Hey everyone first time posting here but I have an issue where my carbon GT kicks me down to eco after a few minutes. Initially I suspected battery sag however weirdly the battery still holds decent charge it just really doesn't like GT mode. After a minute it allows me to switch to GT mode again however slowly the remote indicates the battery is dying and goes back to eco. Anyone else had this issue? It's driving me nuts

 

try to calibrate the trigger and breake. this helped in my case.

 

the same happens to me. I use the board to commute to work, and coming back home up the big steep hill, it usually kicks in at the very top of the hill each day. I have to pull over and switch it back to GT and it stays. Not sure why.