Effects of vsi.pwm_freq

Hi
We’re using Telega 0.3 on a hexarotor, paired with Tmotor MN501 Kv300 motors.
During flights we noticed that, at certain times, the arm ends enter substantial vibrations that come and go.

The vibrations are similar in appearance to vibrations we encountered when we tried to migrate to Telega v0.6 (back then - the drone arms would enter violent vibrations when crossing ~2000RPM. The phenomenon was then analyzed as related to the lower PWM frequency Telega V0.6 uses, and solved by reverting back to v0.3)

We are using Ardupilot with UAVCAN and therefore blocked from using Telega V1 (which is, of-course VERY unfortunate)

Question is - could the vibration we see be related to the Telega PWM frequency?
Can we change this parameter to test its affect on the vibrations? What are the normal boundaries for it?

Thanks
Gad

What is the frequency of the vibration?