Invisible surfaces in large/complex maps

[arlesshill]

Walls seem to become invisible on large maps.
This is an area on MAP02 of graveworld.wad(my own WAD) with the RT renderer:

And here's the same angle with the OpenGL renderer:

MAP01 works fine with no issues, but MAP02 and MAP03 is broken so I think it might be a problem with larger maps, especially considering MAP02 and MAP03 is designed to be as complex as possible without breaking the visplanes limit.
Here's a DL for the WAD: https://mega.nz/file/xgpwVYCD#P__DlKAg4ECbUJchaUhbDBEVUhbgnsa_O-Gk9AHUjWg

This also happens on some maps in dbimpact.wad

[ColinSalem]

It's possible that this is related to #29. You might be able to look at these platforms with a map editor and see if they share any properties with the surfaces that aren't rendering on your map to zero in on the cause of this issue.