PX4 VIO outdoors

Hello dear community.
I have flight my drone indoors without problems using T265 realsense camera.
I have did many task for my research. I want to fly outdoors but the drone seems to lose its position and orientation. it starts to take off but the height (z position) shows negative values, in my program when it reads negative height the drone lands and disarms it, so it cannot fly. I have tried to see the possible errors in the programming but everything is fine since in the laboratory it works perfectly with the same configurations. I emphasize that the t265 camera is looking forward.
I’m attaching the fisheye view of one lens.
Any suggestion is welcome.

Fisheye view flying outdoors:

The following picture is the view of the fisheye flyin’ in the lab:

Thank you so much