UI FPS LOW，MAVLINK High latency

[HuanHuanTuanZ]

Using the dashboard plugin on RADXA 3W will result in UI FPS as low as 1 to 2, which does not exist on Raspberry Pi
The 25FPS set in developer mode cannot be achieved. If possible, I hope to have a smoother OSD for higher quality AHI display
When I use telemetry, I find that there is a significant delay in both MSP and MAVLINK for AP firmware