Pixracer hover/flight issues

I have an issue with my new pixracer loaded with PX4 it will hover for a few seconds and then it will suddenly lose power/altitude and spin (yaw). It will either climb too fast or fall and yaw/spin, it’s hard to maintain position.

Tarot 250
20a afro mini esc
Quanum 1806 2700
Stabilize flt mode
Generic 250 racer
5x45 3 blade