Land Ownership Map US

[dan]

I am looking for a land ownership overlay for the US, i.e. a map that shows if land is BLM, National Forest, Military etc.
Similarly to the Gaia Public Lands overlay, https://www.gaiagps.com/maps/source/gaiapubliclandOpenBounds/

The data seems to be available as the Protected Areas Database of the United States (PAD-US) 2.0
The files are either available by state as KMZ files, https://www.sciencebase.gov/catalog/item/5ccb03cee4b09b8c0b780421
or as shapefiles or a national geodatabase: https://www.usgs.gov/core-science-systems/science-analytics-and-synthesis/gap/science/pad-us-data-download?qt-science_center_objects=0#qt-science_center_objects

The newest version, Protected Areas Database of the United States (PAD-US) 2.1, only has a "File Geodatabase Download Package"
https://www.sciencebase.gov/catalog/item/5f186a2082cef313ed843257

How can I turn these into an overlay for OruxMaps?

I tried adding the kmz (e.g. PADUS2-0PublicAccessLYR_CA.kmz) or shp files using Overlay Options | Load KMZ/SHP Overlay, but either OruxMaps crashes or hangs on "Processing. Please Wait"

These files are very big, 10s to 100s of MB. Is there a size limitation for overlays? Is there a way to tile an overlay?
If not, what is the best way to ingest these files?

I am using 8.0.5.beta7