Multiple tempo and plugins that use tempo sync

When using plugins that have a tempo/bpm sync, how does ardour handle multiple tempos and plugins that are synced to a tempo, for example I have a song that’s main setting is 90 and at the end of the song the tempo changes to 140 for example. If a plugin was enabled tracking the tempo at 90 what happens when the tempo changes, I assume it will change as well

Most (all?) plugin APIs have a way to ask the host for the current tempo information. Typically the plugin asks the host for information every time it is told to process some audio. Depending on the API, this can “quantize” tempo and meter changes to the buffer size, or not.

That’s great, I guess it won’t be a issue at all in most cases