Hi guys,
I have the same problems as you. My system is an XP 32bit, 2.2 dual CPU, and 9600GT with 512Mb video card.
I find this route the very best at the moment, because there are lots of freight yards, what is my top priority.
so I tried to make it run, let me tell you my opinion:
1. Turn off any kind of shadows (hi, and low detail as well), and procedural flora. without this I couldn't even load the route.
2. Turn down view distance, at least to medium
3. Turn down particle density to low
at this point you'll lost all benefits of railworks :/ , but able to play!
4. turn down any unnecessary quality (passengers, water, etc, as you wish)
I tried to modify scenery detail level, but it didn't help for me.
with these settings I can play, but still many SBH-messages.
I think forests eats memory. And grass fields as well. I show you a screenshot, on which you can see what I mean:
http://kepfeltoltes.hu/view/110220/memo ... es.hu_.jpg
there are many forest and grass field objects at the distance from where you hardly notice the train. I think those are unnecessary, and waste of resources. I think a big box with forest texture is enogh at that distance.
what do you think?