Bought lossless scaling on Steam for 8.20 after reading this message on the Dovetail forums:

https://forums.dovetailgames.com/threads/lossless-an-enhancement-app-that-is-not-snake-oil-my-mind-is-slightly-blown.82598/

Also some more info on:

https://rail-sim.de/forum/thread/41712-lossless-scaling/

UPDATE - it interferes badly with ThirdRails. Uninstalled 19/07/2024