Installed TSW6, then updated NVIDIA driver. Drove Cathcart Circle with no mods. Looked okay.

Installed Jetwash's mod and associated recommended dependancies (Train lighting and LOD fixes, BetterShadows, BetterSnow, Foobian God mode 0-6-3, UK Rolling Stock Orange PID fix and Updated Rain Visuals).

Set image scaling on in NVIDIA settings for TSW6.

Drove Cathcart Circle again. Looks greate and good framerate.