The difference in LQI between different manufacturers of ZigBee chips is a typical situation.
Unfortunately, LQI is not a standardized parameter, so each manufacturer calculates it in their own way. LQI in conbee and efr32 is always greater than in cc2652x, even with the same RSSI. Therefore, LQI is a conditional parameter that may not reflect the real situation.
The second factor that affects LQI is the location of the coordinator. If the USB coordinator was in one location, but after migration you placed the network coordinator in another location, this will affect the LQI of some devices, since they will be further from the coordinator, the best option in this case is to re-pair these devices.
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