Custom Resolution Utility (CRU)

[Wally]

Hi I am new to the forum. I have a problem with CRU 1.3 and need to know how to fix it. I have a new LG 27UD68 and RX 470 and was trying to extend the range from 40-61Hz up to 35-72Hz. I discovered the 72Hz upper limit frocing it using NVidia. Problem is that after using CRU, I only get 30Hz max using a DP 1.2

The Rx 470 is replacing a GTX 970 to use the freesync of my monitor and now I am stumped and don't know what to do. How can I fix or revert?

I tried re-entering the old 40-61Hz values before the change and it still only plays at 30Hz.

Thanks and Merry Christmas if I don't hear from anyone before then.

Wally