Originally Posted by
SleepyLia
All cvar settings were hardcoded during the switchover from UE4.25 to UE4.27 and therefore changing the values in the local files no longer work.
The only way you can do it is if you have a pak bypass (which are paid) and load custom pak files to do what you want, but that will require having or knowing someone that has experience with Unreal Engine.
TL;DR; not possible without paying for a PAK/EAC bypass which is 40 EUR per month which isn't worth what you want it for.