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How many triangles are in your meshes? I've only seen delays like this when my robot was way over specified (but even then, maybe 30 seconds to show up).

If it takes you that long, you've probably generated your meshes way too finely. Export them again or downsample them in Meshlab to a reasonable number. Keep in mind rviz is just for visualization and gazebo is (mostly) for that as well, unless you're trying to do some really fancy contact dynamics / generate images with robots in it.

How many triangles are in your meshes? I've only seen delays like this when my robot was way over specified (but even then, maybe 30 seconds to show up).

If it takes you that long, you've probably generated your meshes way too finely. Export them again or downsample them in Meshlab to a reasonable number. Keep in mind rviz is just for visualization and gazebo is (mostly) for that as well, unless you're trying to do some really fancy contact dynamics / generate images with robots in it.

Also running things in a VM is going to be a nightmare and extremely slow with gazebo. I would not recommend this path for any serious development or length of time.