What is dlss?

Idk maybe I should just stick to what games offer... so I have a 5080. I usually use dlaa, but when a game offers path tracing I need to use dlss.

I always see all this talk about transformers and presets and dlss 4 and 4.5 and so on. How do i actually use them?

With AMD FSR it just tells you in game menu.

I just want pragmata to run better at 4k max path tracing. Dlss performance with 2x looks... not worth the squeeze for path trace.