I am avidly working on the 17+ Altoona Freight yards, and Junata Shops. I will let you know about framerates and stuttering. I am using MP Wood V2 and MP Rusty, along with Pencil42's 3 foot Track For Shay on the Wopsy RR. As this route is created in TRS2006, I am hoping that the tracks will show up OK in 09/10.
Experimenting with all the hundereds of high poly and chunky mesh tracks that ALL kink like a S.O.B. in turnouts, I am sorrorfully turning back to the good old standby chunky mesh tracks listed above.
WRRW TK2A and Standard High at USLW are great ... but the framerates and severe kinking in turnouts are just so incredibly unacceptable.