Practical PID Tuning - Part 7 - DYS 5x4x3 Vibration Madness

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In part 7 of the series, I face one of my most difficult tuning challenges yet. I'm using some DYS 5x4x3 props on my QAV-R, and the props are horribly unbalanced, meaning I can't raise D gain as high as I'd like in order to control bounceback after a roll (and other issues too, but mostly that). Bounceback after a roll is usually not too hard to tune out, but this is like tuning with one prop tied behind my back.
Parts List:
Lumenier QAV-R frame (GetFPV.com)
Xracer F303 v2.1 (FPVMode.coml)
Betaflight 2.9.1 @ 4k/2k Oneshot125
Rotorgeeks RG20 Plus ESC (Rotorgeeks.com) / BLHeli 14.6
Rotorgeeks 7075 2205/2700kv motors (Rotorgeeks.com)
DYS 5x4x3 Props
Foxeer XAT600 / HS1177 (Atees.com)
FrSky X4R-SB receiver (Atees.com)
TS5823 200 mW vTX
Aomway cloverleaf antenna