found the glitching issue, need help solving it

[ncalenda]

Yes, I'm running an external BEC.

I have the receiver up front, and the esc in the rear, I can't really move it anywhere else. Should I try moving the antenna?

Remember, near me it works fine, no problems at all, in fact I had my friend hold it in the air, and I held it at full throttle with no problems, it is just when out 50 ft or so, which drives me crazy.

If it was the receiver, would it cause issues up close?