High RX error rate (~54%) on RAK4631 repeater with v1.17.0

[Egon1966a]

Is an RX error rate around 54% expected on a busy repeater with v1.17.0, or could this indicate a regression in the new LBT / preamble detection changes?
Firmware:
v1.17.0-727fc05

Hardware:
RAK4631 + SX1262

Uptime:
20 h

RX:
11156

RX Errors:
13090 (53.99%)

Noise Floor:
-113 dBm

Last RSSI:
-60 dBm

Last SNR:
11.3 dB

Neighbors:
3

Traceroute:
Works fine

[recrof]

try with 1.16.0, so we have a benchmark

[oltaco]

I would be very surprised if the preamble bit or irq timeout was responsible for your RX error count but anything is possible I suppose.

As @recrof said we really need to have something to compare against. Some repeaters do have bad RX error numbers and there are a lot of different possible causes.