No flipsky on this board yet. Its a hobbywing ESC
This is correct, when the battery has a load on it, the voltage drops. This is normal behaviour and you experience this to a smaller degree on high discharge cells due to their lower internal resistance. When the voltage gets below a certain value, you can get a cutout. What you can try is lowering the “battery voltage cutoff end” on your vesc. Note: I don’t recommend a lower value than your series count * 2.6V. And also keep in mind the higher this value is the longer your cells will last. If you use a discharge BMS, you can’t really fix the cutout unless it’s one of the rare BMS’ that you can program yourself. Another way of fixing the cutouts would be lowering the battery current setting in vesc tool, this reduces high speed acceleration so not ideal either.