
Ah Gentleman, now after reading what has been added, I had to put on thinking cap, as my Parents and Grand Parents would have said: In TS-12 now I remember the Spline problem when I would do lots of extensions et all.

This was before I went from mechanical HD to SSD and increased my Ram from 12 to 16 Max allowed for this Laptop.
Usually these problems would rear their ugly heads when I had been working on a route for 45mins or more, and when I extended any and all type splines. The computer would freeze, or I couldn't make some make normal operations like adding a train, or deleting something.
I soon learned that when I saw the beginning of these issues, I needed to do a save/save-as operation if I could, however if it went to far south, I would loose my work and have to exit Trainz and then restart the program and eat 1-2hrs of production.
Occasionally I would have to delete Trainz completely and re-install it, fortunately I had backed up all my routes and inventory, but even with that, it took 2hrs or more to reload everything! I did this twice that I remember.
I figured out that two things occurred when I encountered said issues:
The Hard Drive was to slow at 4200Revs, and 12 Megs didn't cut it either, so if it wasn't the Hard Drive trying to play catch up, it was RAM losing the battle with Windows 7, 8, at the time and like the rest of you, my Computer would lockup, crash, requiring a reboot, needless to say you know what happens to unsaved files in Win Environment it will ultimately lead to corrupted files or worse.
My best solution, maxed my Ram to 16 Megs, add SSD over mechanical, and finally, I was holding my breath, upgrade to Win 10, because of implied better memory mgt......
Now I need to take some responsibility here, I should in the future, as others have suggested, spend more money for Gaming Computer Laptop than trying to go on the cheap like I did, because it cost me dearly, so in retrospect hard lessons well learned and experience is in the end the best teacher painful as it is.
I'm glad I upgraded the Computer for now, but I'm stuck with no upgrade for dedicated GPU on MOB, which sucks and always has, and it's ridiculous or impossible to make a MOB change out on Laptop, just plain to hard by design. So there you have it.
Now there is a ray of sunshine for ole Blue here, I do have a brand new HP Desktop, that I can work with later when I get some time, and it is somewhat portable in the sense everything is contained in a monitor, and I believe the GPU is upgrade-able , so will see when I get to that part. And I'll report back later in the year, as other pressing things, like a major roof leak need my attention first.