Certain Textures aren't rendering properly in FFXI

https://pastebin.ubuntu.com/p/NJ9fnrgVt2/

I installed using the Lutris installers for final-fantasy-xi-online:
-Full US Version
-Windower 4 Live

The game runs great except for this one thing - there are holes all over the place where you can see through the environment! Sometimes these holes flicker with the texture that’s meant to be there, but it doesn’t stay.

Imgur album for screenshots of the issue, and pastebin contains the output of lutris -d
I’m on Linux Mint Debian Edition 6 Faye

Any pointers on how to diagnose and treat this are greatly appreciated!

https://pastebin.ubuntu.com/p/Nk2wDfMZnT/

this link contains the output of lutris --submit-issue