Custom Resolution Utility (CRU)

[SPEED]

Hi, i'm trying to sort out my problem but with no success. I need cru to fix the max vram at idle problem that my 5700xt has with my 4k 120 hz LG TV. As it's a know problem the only way to fix it for now is to use a very old driver or use a custom resolution. I manage to fix it using cru with a custom resolution of 2560x1440 but i want to be able to use 4k and at least 100 hz. I've been reading through this thread but didn't really find a solution. I know that i have to add a displayid to be able to use more the 65 hz for 4k as editing the detailed resolution from the main screen will not allow me to go over 65 hz. The problem is that even in the main screen when i edit the 4k detailed resolution and add 65 hz, anything over that value will become red and can't be set, will not be displayed in windows. Using displayid 2.0 allows me to go to the desired 4k 120 hz but again does not show up in windows all dough using displayid and adding a custom 2560x1440 resolution works, i mean it is displayed in windows and fixes my problem. Exact model of my tv is 50nano886pb. I have to mention that i can use 4k 120 hz in windows using just the drivers but my vram stays at maximum frequency all the time. Any help will be gratefully appreciated.