Tried upping the displacement number in settings, it didn't crash but didn't give a result any where near acceptable. I dont think displacement is going to work, I have 16gb of RAM on this machine, which has never been a problem before with displacements on other renderers.
Just downloaded a trial version of vizparks walls & tiles, it also uses bercon but with their own custom material node and map nodes. Again I am still struggling to get any kind of bump from corona. Going to contact them directly as well, as it says corona is supported, it even has a singled out material just for corona use.