Multi-Vehicle: Connect speed too slow

[lwx0715]

Current Behavior

When handle with more than 3 Vihicles, the connection between QGroundControl and px4 vihicles is very slow. When connecting 5 quadrotors, it takes about 10 minutes to complete the connection. And it sometimes happens that the parameter return is incomplete.

Steps to Reproduce:

Please provide an unambiguous set of steps to reproduce the current behavior 1.Download QGroundControl source code 2.Build & Run the project from Qt Creator 3.connect 5 px4 vehicles like quadrotors

System Information

When posting bug reports, include the following information

• Operating System: Ubuntu 18.04 LTS
• QGC Version: V3.5.6 Stable
• QGC build: self-built from source
• Flight Controller: Pixhawk 4
• Autopilot (with version): PX4 1.10.1

What should we do to speed up the connection? Thank you

[HTRamsey]

Please reopen if this is still an issue on a recent version.