# QGC not loading proper

Source: https://forum.modalai.com/topic/4748/qgc-not-loading-proper
Category: VOXL 2 and VOXL 2 Mini (https://forum.modalai.com/category/26/voxl-2-and-voxl-2-mini)
Tags: voxl-2
Posted: 2025-09-18 10:51:38 UTC by Jetson Nano
Replies: 6 · Views: 1350

## Jetson Nano · 2025-09-18 10:51:38 UTC

Re: [Problems connecting to VOXL2 with Doodle Radio on SDK 1.0 and 1.1](but not 0.9.5)
Hey @John-Nomikos , where you able to solve this issue, i am facing the same.
@Alex-Kushleyev @Eric-Katzfey , could anyone help me out with this issue. I tried by changing the  udp_mtu values, still no luck. 
I am using the VOXL 2 board with 1.4.1 sdk , along with flight core v2 sdk. and doodle labs nano for communication. While using the internal PX4 , it is loading fast.
what could be the reason for this issue?

## Reply by tom (ModalAI staff) · 2025-09-18 17:15:16 UTC

@Jetson-Nano When you say "while using the internal px4, it is loading fast" are you saying that when running px4 on voxl2 it connects but when running px4 on flight core v2 it doesn't?

## Reply by Jetson Nano · 2025-09-19 05:37:22 UTC (in reply to tom)

@tom Yes, that's what I am mentioning, I am using flight core for control , but just verify I checked with internal VOXL 2 PX4 server, it was loading perfect.

## Reply by tom (ModalAI staff) · 2025-09-19 17:52:28 UTC (in reply to Jetson Nano)

@Jetson-Nano Have you gone through this doc to ensure you have everything setup correctly for an external FC? https://docs.modalai.com/voxl2-external-flight-controller/

## Reply by Jetson Nano · 2025-09-20 06:58:15 UTC (in reply to tom)

@tom Hey , I was able to solve it, it was due to the ip address management in the voxl-mavlink-server.
I changed it to the ip address set for the doodle labs, from the default 192.168.8.1, it was loading much faster and with every setup in QGC.

## Reply by tom (ModalAI staff) · 2025-09-22 16:09:06 UTC (in reply to Jetson Nano)

@Jetson-Nano Great! Thanks for sharing the fix

## Reply by Jetson Nano · 2025-09-23 04:38:01 UTC (in reply to tom)

@tom Thank you for the support.