DLSS, substance and others

hello

what is the download link for the plugins to use:
DLSS?
Substances from Substance Designer?

Are there other optimizers to use in Unreal Engine?

thanks

hello

Does DLSS work with render: pathtracer ?

What is the maximum resolution I can get with DLSS? both in Path tracer and in Lumen?

What is the minimum resolution at which I should use pathtracer to use the full capacity of DLSS?

thanks

Can anyone help me with the questions above?

thanks