Seems to be a duplicate of #11071 as you mentioned, what makes this a new issue?

It's not the browser that struggles, but the server. The issue is unrelated to the loading of thumbnails, as the endpoint only returns URLs. Switching to/from the list mode on the albums page is almost instant in my browser.

How many albums do you have? Edit: I see 225. 900ms doesn’t seem crazy unreasonable enough to be a bug to me, but I’ll give it a bit for someone else to chime in.

I'd imagine that fetching albums for the albums page should be at least an order of magnitude faster than that, possibly closer to two. There are a lot of queries that are just slow and unoptimized. While porting things over to the Kysely query builder, I've also been doing an optimization pass on these.

Should we close #11071 in favor of this one?

No, these are different issues, see my comment above

Just going to add... on loading the albums page on my end, the albums endpoint request takes 5.1s on the server to load. This is with around 6k albums. Creating albums takes around 1.5s/1.7s (Via direct API calls)