Just speaking personally, I always use the corresponding Inovelli driver for any Inovelli device (ie, from their github or via HPM).
I think the differing Security levels of their inclusions probably would be an issue ... are you aware that "security zero" is an actual security level ("S0"), as opposed to disabling security? Your devices might still be using different settings in this regard.
I would try the whole setup with all security disabled, or at least with them definitely included using the same Security level, just to reduce the number of factors in play. You should be able to see what each device is using if you visit your Hub's Settings screen, then Z-Wave Details. There should be a table with a column over on the right for "Security" where you can compare them.
