Picard is very slow

Picard (latest) is IMO really slow doing requests. It seems it’s not running several requests in parallel nor isn’t it asynchronous, so it’s blocked most of the time when requests are handled.

Is this a known problem or by design? Just wondering… it can become a pretty long running thing if you want to tag 1000+ files.

It does run requests in parallel, but rate limiting applies for some servers. Especially the MusicBrainz API is rate limited to 1 request per second, AcoustId to 3 requests per second.

If plugins query additional servers those will by default be rate limited to 1 request per second also, but plugins can and should override this according to their needs.

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