Gameplay is very smooth in 1.30.6, but I still feel the passive nature of the AI, even if it was tweaked. It was vastly improved in the latest patch.
I think I will have to reapply the latest patch, and go with the other bugs. But maybe there isn't long to wait for the new one.
There may be a caveat however. If historical nations are on, those nations are rampant. England and France were blobbing everywhere, to the extent that England formed GB before the end of the 1500s AND was going mad with colonies. There were four powerful nations all with over 1000 dev by 1590, GB, Ottomans, France and Ming.