Question about duty cycle control Vs current control mode

Hi everyone. I've been building my own custom firmware of vesc with a load of additional tweaks and highly modified duty control and current control to add ramping etc to suit my tsdz8 . Current control seems a bit unstable and will grind and stall motor if I'm not careful. Duty control is relentless. But am I imagining things or does duty control give worse range even if actual motor current, riding style etc are very similar?