i normally use 1500 for velocity and 50 for acceleration

You can of course increase these settings, velocity gives you speed and acceleration defines how quickly you get to that speed. Too much acceleration and it'll stall so be gentle with the acceleration.

I've had the boxford running at 3000 on the velocity, which is 3m a minute, but you risk stalling the motor that way, that's why i stay at 1500.