Slow loading the UI

I’ve noticed since a few weeks, not sure, but perhaps since the 2025.1 update, that loading the web UI has become quite slow. At the same time though, it has always been slow, but there’s a new level of slowness added, it feels like.

When I navigate my browser to the correct URL, it’s just sitting there, waiting for the first reply from the server. It’s loading literally 0 bytes of HTML for the first ~4 seconds or so. Then it displays this “Loading data” screen for another ~4 seconds.

I really don’t think I have an all-too-crazy setup (yet), so I fear it’ll only get worse as I build out my smart home further.

But more to the point, in order to diagnose what’s causing this (assuming it’s abnormal - and it seems that way to me) what could be some of the causes for both cases?

For reference, I’m running HA core 2025.1.2 on Supervisor 2024.12.3 on HA OS 14.1. It says it’s up-to-date. It’s installed in what I feel is a very generously specced VM on Unraid, running on hardware that is otherwise idling away for the most part. Point being, hardware is unlikely to be the problem.

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Same issue here