glitching with mmm

[twisted8]

im having problems with glitching with my mmm v3,2200 kv combo.im running it on 4s 5000 40c packs in an emaxx.

it happens about 50-100 ft away from me. ive tried two radios and still have the same issue. iam wondering if i need to run a external battery for the receiver or maybe run a glitch buster ?

im running a single servo set up and a personal transponder also. maybe iam taxing the stock bec ?

any suggestions ?

thanks