My desktop app (windows, in the US) has been slowing down over the past year or so, i kept assuming it was throttling because of the insane number of playlists I've created over the years (~1-2k ish?...). This past week it has now slowed to a latency that is unbearable e.g. trying to 'save to playlist' takes about 20-30 seconds to execute.
Any ideas? I've obviously rebooted a billion times and this has zero effect.