Mysterious random oscillations

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Please help us to find bad videos. Broken or unappropriated video content?
I'll be using this clip to show others and see if I can solve the problem.
Realacc X210 4mm Frame
LUX FC set at 8/4Khz
Racerstar RS30A V2 30A Blheli_S
RS2205-2300kv motors
Cyclone T5045C props
Frsky sbus rx
Foxeer Monster 16:9 fpv cam
600mw VTX
esc signal wires twisted with ground wires
Motors and FC are soft mounted, P gain reduction makes this worst.
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