Kwikset zigbee module 450202 vs 450201?

[destructure00]

@dnickel

I would like to replace my 3 modules as well but I just can't seem to find a good supply; just the odd eBay one-off.
All 3 of my locks are constantly rerouting and huge RTT Avg. The rest of the Z-Wave mesh is all happy in the low ms range.

I really don't understand why they struggle with zwave so much. Frustrating.