Custom Resolution Utility (CRU)

[avetiso]

Hello ToastyX,

I'm trying to increase the refresh rate of my LG UD69P-W, which is a 27" 4k display. I'm using a GTX660. I've tried using the CRU tool, however, my refresh rates don't appear in my Windows setting after creating a new profile. I have tried both deleting all but the one profile, as well as simply adding a profile and moving it up to the top of the list. I've googled around this thread and I've seen you recommend disabling the extension block, but I'm not sure what that means as I haven't seen any checkboxes that say "disable extension block" anywhere in the tool. Does this mean simply deleting the extension block that is already there when I run the tool? I'm running the latest driver from Nvidia (398.36), and I have tried this with both GeForce experience installed and not installed. Deleting the standard 60Hz option (the native one) does reflect in Display Settings, however, and leaves me stuck on the 30Hz option. Also, when creating a new profile in LCD - standard, the hertz option becomes red at 74 hertz and higher, and in LCD - native, anything 67 or higher also becomes red.

If you have the time to spare helping me out, I'd much appreciate it. Thanks!