I read there was a TS2020 mod that links routes but I can't seem to find it again.

I was looking through some mods to really get the most out of my TS2020 install in terms of performance etc. and came across somebody talking about a mod that linked some, I believe it was London routes. I can't for the life of me find where I saw it, the creator was talking about it being a little glitchy during route transitions if that helps.
The same place was talking about a performance mod that everybody seemed to be using AVROK or something similar? I bookmarked the site I saw it all on, or so I thought, but I must have misclicked and lost the site.
Any clues as to what the hell I'm talking about?