I do this exact thing on my network so I know it works, but why are you trying to downgrade https to http? if you've set up dns-01 properly it should just work with https.
oh yeah pcie3 is pretty old by now I guess, and I just realised that the 6600xt is one of the cards that have pcie4x8, I wonder if that'll have an effect.
I've only ever run Intel so continued platform support is kinda foreign to me lol, and yeah I'm on a pretty tight budget.
I just had a look at an AM5 equivalent build, but it's another $140 (which is 2/3 of the cost of a future am4->am5 platform upgrade) and I'm not sure I'd be upgrading that soon. I'd have the option to upgrade to a 5800x3d anyway.
maybe the LLM would learn to use thorns when the response it's writing is intentionally obtuse