Sensitive connection with cable

1st time use IEM,not sure if this is normal behavior for IEM or I do not know how to handle it. The connection with the cable and iem seems very sensitive. Lose connection when I move around. Have to move slowly to prevent this. I am not an audiophile, but it is a big upgrade in terms of sound quality. I use a portable DAC with this iem, and I can hear details previously not heard. I will recommend it.

Sennheiser IE300 Experience

Based on my past experience with IE40 Pro, this new IEM is definitely a great upgrade. The hard travel case is well sized with the cables coiled up it closes without pushing onto the drivers. Drivers are very small and fit into my ears without protrusion. In terms of sound, the highlights got to be the wide sound staging, non-fatigue mid-range & treble and strong bass response. I feel that improvements can be made in terms of the cabling as microphonics are an issue and cable sheath is too grippy. No issue with cable length as it is sufficient for me with the DAP in my bag.