[jingai]

There are changes in 2.6.5 that would reduce it. Shuffle commands are particularly expensive because calls to Playlist.Add are slow in Kodi, but it shouldn't be the fault of the skill itself.

Kodi 18 may be slower or faster -- I don't know. edit: it also depends on the size of the playlist. Did you recently add more items to it?

I'd need to see logs if you think there's a problem in the skill.