While this is an old thread and I have not posted in a while, this subject is of particular interest for me. First I am getting back to my interest in my building a subway version of the Staten Island Railway. There is a separate thread on that subject. I have encountered this problem, even going over the openbve source code to search for the problem and possible solution. I am undertaking a task of reducing textures by consolidating images. I am having little success, but in thinking about the problem as the OP suggested loading all textures at one time and possibly keeping them active. I agree with this philosophy and I am attempting to provide a solution. I will attempt to accomplish this by building a "cache box" under all my landscapes which occur at 25 meter intervals. This will be an object encasing all textures. Each texture will only be a few inches square strategically placed under the landscape out of visual range. I want to do this so my route could run smooth on a 7 year old laptop. Mind you I am in the market for a 9th or 10th gen I9. If my solution is not successful than I have no choice but to throw a lot of power at the problem.
