how old is the battery?

Did you pull it out of storage and then get 10 cycles before it started acting up or is it a brand new pack? If new, where did you buy it from? Was is a very old pack from stale inventory that has sat on the shelf for a long time before you bought it? If so, I would do a capacitance check with your charger on the next charge cycle after a full discharge... if the capacity is underrated then I would do a warranty claim where you bought it.

If the pack is old, then I would budget for a replacement... disabling the LVC would be a decent work around, but if the problem persists with a known new pack then something else is going wrong...

When's the last time you reset the ESC and re-calibrated it? Has it ever been overheated?