I have a similar battery & controller setup and found the same to be true. (48 LiPo pack) I started out at 140v as the Battery Pack Voltage limit. After changing it to 125V it made all the difference. I discovered the limit by driving at different speeds/gears/accelerations and letting another person write down parameters using ZillaView via a laptop.
Remember to drive for a couple hundred miles to break in the batteries and motor brushes before you "punch it". It's a real temptation! EV driving is so much fun.
Remember to drive for a couple hundred miles to break in the batteries and motor brushes before you "punch it". It's a real temptation! EV driving is so much fun.