Martian II, 5", F4 Revo FC, Betaflight 3.1.7, X-Rotor 30A DSHOT600 ESCs, RS2205S 2600KV, HQProp 5x4x3. Initially I had bad oscillations that almost completely disappeared after disabling the "Controlled by TX" setting in the ESC setup. Next flight will be with a soft-mounted flight controller and afterwards I'll try to tweak the gyro filters to get rid of prop-wash....