Sensor error radar 0:9

Upgraded to the latest version and set off hopefully on a 3 day trip to test it out.....behaved itself for a day and then got loads of Radar error 0.5 and error 0.15 before it disconnects from the 1030 and needs power off/on to reset.... nothing around me for miles .....so distracting, I turned it off - very disappointing - returning it.

Sorry for not being helpful. But this is the equivalent to the 1202 program alarm on Apollo 11 :-)

I've had this on several rides. The common link appears to be traffic lights! It doesn't happen at all lights but certainly all my episodes have happened just passing them.

Had my 516 for a year without ever having this error. Then yesterday - boom - there it was. With all the sensor disconnects on top (1030 plus on beta) I am getting fed up and seriously considering Wahoo...

My Varia gets upset when I'm going away from a few (but not most) of the speed signs which use radar (possibly the same basic hardware) to measure vehicle speed and display it. These, I assume, are using a very similar frequency and overload the Varia which is looking for the return signal from its own transmitter. This is a transient problem. The annoying part that the Garmin Edge doesn't automatically clear the message once the overload stops.

For a year, no problems.
The last route, exactly the same route I have already driven about 50 times, suddenly 5 times this error appeared at intervals of several minutes. I did not change anything, the soft in Edge 21.18 the latest official, RCT715 also on the latest 5.10.
What is the issue?
Maybe the issue here is memory card wear, since it occurred only during the last drive and as many as 5 times?