Hey thanks a bunch it was a fantastic time!
The old version that I did with the functional double bogies on both ends was prior to my initial public release, but I think I could dig it up or possibly just redo it real quick, it wouldnt be too hard for me to modify it back to that configuration for you to try and tinker with? Can you message me on FB by chance? and I will get it sent over when I can.
Good I am glad the movement has been sufficient in your cases as well! I could possibly look into changing the joint location between the railcar and the bogies and move them closer to the couplers.. that may work I will look into it.
The containers I think I have a good idea of how to handle it, although I havent tested it yet. I am working on a pretty big update for the locomotives and some more placeable stuff atm, then plan on attacking those container cars after! I ABSOLUTELY will add support for 2x20ft containers as well. Idk if you have my pack but it includes 20ft containers and I just completely missed including connections for those for some reason.. Will definitely add it tho. But yeah I have a plan that I think will work! Ill see.
I only did a set of 3 and a set of 5 because that is the default configurations that DTTX created those in. But you could absolutely do a set of 7 for yourself! you can pretty much use any different combination of wellCar2 wellCar3 or wellCar4 to increase the total to 7, as those cars are all setup the exact same. wellCar1 and wellCar5 are both setup specifically for the front and rear so they cant be multiplied really.
Butt yeah as for the performance, it can be a really big drain on your computer. FS honestly is not optimized very well, and obviously wasnt ever intended to have this many connections and collisions and rigid body components so it can be taxing on medium to lower end computers. I have a Ryzen 9 and an RTX 3080 (although it is the laptop version of those, so not quite as powerful as a desktop equivalent) and I have an 80 car intermodal train with 4 locomotives on the head and I do get frame drops, but can still manage between 20-30 generally. My buddy who is a tester for me had a very large coal train and a very large oil train and he didnt experience any frame drop issues so I think your hardware can be somewhat limiting on these unfortunately. I have tried to simplify the collisions and wheels and such as much as possible while still keeping them functional and realistic!
Thank you again!