in my case yes, it worked in different projects.
must be places in Plugins game folder.
For example upgrade this project (GitHub - Adriwin06/Ultimate-CommonUI-Menu-System: This project provide the Ultimate Modular Menu System for Unreal Engine 5 using Common UI where everything is easy to reuse/build on. For the options menu, there is everything you need from basic scalability settings to DLSS/FSR/XeSS/NIS/TSR settings but also Post Process or Lumen settings and NvRTX settings like RTXDI or SER.) to 5.5, disable unecessary plugins and FSR, replace with my DLSS versions, Package the shipping build and you should be able to test and change the dlss in game.
I did the same fix for Intel XeSS No longer working in Unreal 5.5 · Issue #13 · GameTechDev/XeSSUnrealPlugin · GitHub