It has been a while since CRU has had a major update. I've been working on rewriting CRU from scratch, but it's taking longer than I'd like, so I thought I'd release a work in progress to give advanced users something to play with. Some features have not been reimplemented yet, and it has not been fully tested.
https://www.monitortests.com/forum/Thread-Custom-Resolution-Utility-CRU-Work-in-Progress