Major glitching on 2.4 gHz

[Jack3M]

Was running my 4200 XL today and initially got some glitching on the tracks while using the digging arm. I thought at first I was hitting the levers for them. Not. As time went on, I noted the pump motor had slowed. Shut down, rebooted. Next time it glitched it did the same thing to the pump. The only way to resolve is to shut down and reboot. Battery(s) voltage just fine on radio and excavator. The last time it did it, was a different battery and it was so bad all the channels got hit, including the hydraulics. My home is probably pretty clean as far a interfence is concerned.

I have not had time to check this out. Wondering if this sounds familiar to anyone else. It has been flawless up to now.