OV2311 external trigger FPS

Nvidia Jetson Nano/NX Cameras
1

  1. Where did you get the camera module(s)?
    Uctronics

  2. Model number of the product(s)?
    B0221

  3. What hardware/platform were you working on?
    Jetson Nano Devkit B01

  4. Instructions you have followed. (link/manual/etc.)

  5. Problems you were having?

  6. The dmesg log from your hardware?

  7. Troubleshooting attempts you’ve made?

  8. What help do you need?

Hi! I have tried the external trigger mode as it is described in the article
https://docs.arducam.com/Nvidia-Jetson-Camera/Global-Shutter-Camera/external-trigger/
The issue is that on full resolution (1600x1300) I cannot achieve 60 fps. It seems that some margin lies at the frequency of 57 Hz. When 57 Hz is supplied to the XVS pin, the camera returns 57 fps. But if the frequency is increased to 58 Hz, there are only 29 fps, and at 60 Hz there are 30 fps - only half of the desired frames are received.

The same resolution in the free-running mode gives exactly 60 fps. Is it possible to achieve such speed at the trigger mode?