Still random glitches

[captainlip]

Running an x12 with nosram speedo, savox servo and spektrum rx, when racing randomly and unexpectedly the steering won't centre immediately or there is a delay, and very rarely there is a twitch in the throttle but its mostly the steering being unpredictable.

The things it could be -

When the Tx batts start to get low sends low or delayed signal.

Speedo randomly flashes it's blue limiter light even when stood idle just flashes for split second

Interference in the room

Dodgy servo?

This is all I could think it be, just wanting to resolve it as it's cost me a few wins and usually when the steering doesn't centre again I usually hit something and last time caused ballcup to pop off

It's not a constant issue and usually happens toward the end of the night when TX batt starts to drop this is main thing I think it could be. At the start of the night the TX voltage is usuall 5.6v and end of the night usually around 5.0v to 5.2v

Really at a loss at this one any advice be great