To clarify, can you please stipulate what actual custom ground traffic the addon manager actually DOES handle? And in particular, in terms of KLAX & KLAS.
Animated ground traffic (except GSX, of course) which is clearly not default. You probably know how the default airport vehicles looks like: some of them are grey and some of them are blue. That kind of stuff.
I currently have FSX default airport vehicles set to "0" within FSX - meaning Zero/none.
This means you won't see ANY
default airport vehicles. This won't affect in any way the vehicles created by the Addon Manager, which is why the Addon Manager has its own settings.
There IS a reason why those settings are GROUPED in the user interface within a boxed area that says:
"Addon Manager tweaks - applied only to sceneries handled by the Addon Manager"
to clearly separate them from the generic FSX.CFG tweaks, which are grouped in their own box, labeled "FSX Tweaks - applied globally for all FSX sceneries"
Ergo, if I could eliminate any FSDT custom ground traffic for KLAX & KLAS, that would be great.
That's precisely what that switch does. In a previous version of the Addon Manager, the custom airport vehicles were controlled by the Scenery Complexity slider, but some users asked to be able to control them independently without having to touch the Scenery Complexity slider, so we complied, and that setting was added.
Better still, if there's a detailed manual on the operation of the Addon Manager and all it's features...that'd be appreciated.
Everything related to purchase and activation and reactivation is explained in the fsdt_install_guide.pdf, which is what most users are usually concerned with.
The FSX Tweaks are common knowledge, we only gave an easier interface to handle them, but we never felt it was necessary to explain them, especially because their effectiveness depends a lot on the user configuration and settings.
Which leaves us with just the "Addon Manager tweaks" ( Altitude Cull, View Optimization, Anti-popup ), which has been explained on the forum, in the thread I linked.