Hello,
The speed, the game needs to improve the environment (rocks, textures etc) this could be why it is perceived as slow. In a future version will increase the speed.
I already check it and the problem is that when you drop the space cargo it sinks, because it does not detect the colision,
by correcting a bug in the craters, the Box Collider was disabled, I have corrected but I can not upload it again. I'll be uploading it again once the Jam has finished.
About your doubt it is necessary to drop the load and after activating the base I leave you some screenshot.
Then recover the devices
And take them to the base
thank you for the time you dedicated to test the game.
Regards.