@Gargron @nonordinarytiles These timelines are not custom-tailored to each user, right? Everyone gets to see the same 'local' timeline?
Then maybe it would be a nice feature if #mastodon could periodically (say once per minute?) pre-generate this timeline, and then everyone gets this cached timeline for the next minute.
Might be a nice "first aid measure" for overloaded instances?
@tinloaf @nonordinarytiles That's the problem, it's not pre-generated but it does have to be tailored for everyone according to mutes, blocks, domain blocks, and language filters.