This one floods, even drowns, the mesh with messages (rx: 513076) making it slow and unreliable. Compare this figure to other, much lower, Rx values in the list.
Most radar sensors (a.k.a. mmWave) use wifi as communication protocol because of the constant flow of event updates.
Zigbee was never designed for that.
This one isn’t helping either, 126863 messages:
I’d temporary remove these two to see if mesh performance improves.
Also mind possible interference by 2.4GHz wifi signals