It's great to see than the OBB 1014 will be improved. It's a wonderful engine to drive. According to me, one of the best ever made for TS. Vielen Dank an RWA für den OBB 1014. 
There is some possibilities to save memory (to counter some other losses).
The 21MB file weisel_Cabcar_cab_diff.TgPcDx is located in :
- SHG\OBB1014Pack01\RailVehicles\Electric\Textures
- SHG\OBB1014Pack01\RailVehicles\Electric\Cabview\textures
It can be placed only in only one location. I have deleted the one in Cabview folder and changed the path in Cab_1014.GeoPcDx :
<TextureByName>
<e d:type="cDeltaString">..\textures\[00]weisel_cabcar_cab_diff</e>
</TextureByName>
I have downsized the weisel_Cabcar_cab_diff.TgPcDx texture to 1.3MB without noticiable viewing impact in game.
It seems the textures are shared with the upcoming Wiesel steuerwagen. The 21MB texture F.TgPcDx is only used for a few items. Also 4 or 5 5MB textures are there only to get some parts of them (ie : a dial, some buttons, and so on).
So there are ways to save the memory wasted by opening windows and the rollo.
Here is some mods I have done according to my likes. Unzip the file, copy the extracted Asset folder to the Railworks folder...
- Inputmapper add : M to place the key, Shift + M to turn the key on, *vR* brakes (numpad +/-), Shift + 6 for On/off Sifa.
- Inputmapper remove : duplicated entrires, entries I don't use such other than vR combination (ie : Shift + 7 for Sifa [LZB on vR standard]).
- Darker windshield from outside
- Very light weathering from Inside (visible on top left)
- A (very) very low bright spot light behind the 2 main dials to help see the % traction/brake (in comination with texture mod) in day and to see dials in tunnels without having to turn on light ou dial light. This light is not visible from outside and is only visible from driving position
- Added a *vR 3 views cameracab* to zoom on left and right desk parts.
- Changed the focus on the rear panel view to see all item in one time.
Anyone can do what he wants with this small changes but there is no support...
Dials are just readable in a tunnel

PS : Rollo are important when you drive in the morning or evening with low sun (winter and autumn mostly) to take nice screens. 