Yeah I’m the same, why use an extra bit of software that you have to download when you can just rename the original files and copy the new one in - maybe I’m just old skool?
I originally had some issues getting this to work but then I redownloaded the dlss files and put them back in again. Strangely, the ones I replaced were only 11mb or so despite saying they were the same version, but when pasting the file back in again it was over 50mb…
Anyway, I find this works for me now. DLSS Ultra Quality is not as clear as TAA for me (Quest 3 - oversampling using OXRTK) but is better than ‘normal’ DLSS Quality.