I have a older Ko Helios with a Spektrum Dsm module. It's served me well but at the last few race meets (both on and off road) it has started to glitch. Both cars use a Spektrum micro reciever and both have the same problem. Erratic throttle response. The more cars in the race, the worse it is. If I'm just driving by myself or with 1-2 other cars there is no problems. My 3rd car (short course) has also had a few glitches but not as bad as the other 2.

I know it's a older radio and Spektrum dsms are old tech but it's never give me any issues until the last month and I really don't want to change radios.