Not sure about Pioneer, but if you can, check on the global water settings & ensure you didn't disable the foam or set it for an unrealistic depth as a trigger.

By default (if I remember) meta water foam is triggered when the underlying object is 1 m or less from the water surface. you can (in complete+ at least) adjust this to better suit your scene. So try 1m/3m/5m etc dropoffs/objects beneath the waves.

Also - w/pioneer if you cant access the settings directly you may want to try resetting your preferences to e-on Defaults (checkbox on prefs) just in case you worked w/content that might have altered things on you.

Good luck!