Thanks American Steam - so far so good!
Its 2054Hrs and I'm hitting 64 bit for the first time: I am in my Croxton to Harrison Cut Off QD - Observations
* My prep was to install the update and reboot - that was it, no other changes.
1. Just starting the QD memory was at
2Gb, 3 mins later I was at
2.749GB2. Lag is 'different" is smoother and has less duration in time.
3. FPSA is approved up 2 all the way around 18-20, 20-22 and so on. (its 10%

)
4. I can rotate smoothly when I'm in Drone mode, mouse movements more smooth.
5. Distant >1.5 km Scenery is drawing later.
6. The Big Test is when the Hudson Generating Station/ Jersey City Populates - FPS was previously down to 8 when that draws. Wow, it dipped briefly to 8 , ram at
2,767GB,hit 8 again claimed to 14, 16 and is holding at 17 (Bergen Hill, Jersey city and the Hudson Generating Station just popped in, no abrupt sense of lag) Current Tile has 2385 Assets, Previous was 2650, tile to right at 1km 1250, tile to left at 1km 750, tile forward at 1km 2905. Total butts in FOV = 9,940 in 5 tiles. I can actually go to editor in a QD at get 16 fps instead of 6. Memory usage now
2,901GB. (Heh, I can see why we crash in Croxton!) I am using 1 GP35, caboose and 6 boxcars (no static consists).
7. Graphics 'crisper', I can zoom with the wheel mouse ... much more smoothly
8. Heavy Lag in curve of the "old loop" 6, 8 and 10 fps before stabilizing at 20. Its improved in the sense that the lag is more brief and less abrupt.
9. On Boonton, same lag as before 64bit and in same places, my high fps is higher, my low fps is the same.
10. Moving away from Croxton, memory usage is less, now at
2,697GB.
This is my olden build machines specs"
OptiPlex 380 ( It was for my home office! )
Pentium(R) Dual-Core CPU E5800 @ 3.20
GHz NVIDIA GeForce GT 740 -2GB
8GB Mem
Hitachi HDS721025CLA382 ATA Device 232GB
Overall impression: Improved! Lets stutter, more enjoyable experience. This update helps the Bergen!

"Thank you DTG!"
*next up, I will Cruise out of Hoboken on my AI enabled run to Campbell Hall, with 2 EL E82 and 7 Erie Coaches