What i did to get it working in 5.2:
Based on project files from original tutorial.
Get files from github and set them as described
I did these adjustments for modules and create infinite ocean with Water plugin using this ocean material
Adjustment in FX_OceanWater
hope this helps. Also i have niagara plugins enabled but please test which one is needed.
ALso recommend to play with these settings to achieve desired effect.
@Deathrey works fine in 5.2 but do you have any idea about this one?
thank you