New to Jellyfin and need some advice

[Hollywood]

The upscaling on my CCwGTV 4k is ok.  I can't speak for the Roku Ultra, but I doubt it is much better.

Good bluray players almost certainly have much better upscalers.

Thanks. DVDs were around before big screens and I don't expect them to produce state of the art quality, but I want to squeeze out the best picture possible as I have a a lot ripped to Jellyfin now.

side note: Jellyfin is AWESOME! Not perfect, but it rivals any commercial streaming service and is better then some.