Hey, as we all know MTA has certain streaming limits, that also limit our ability to map properly.
There now is a function called dxDrawModel3D (since 1.6 r22708) that should solve these problems.
https://wiki.multitheftauto.com/wiki/DxDrawModel3D
You can now freely convert your map on this github.io website I set up, it will output both the .lua file for the dxDrawModel3D functionality as well as an edited .map file with everything removed that has been converted to the .lua.
Thats it I hope you enjoy and report any errors that you might encounter(I havent tested it properly)