Hey all, been a while, how’s things? 
I just pushed a couple new branches to Github, first one was a 4.11 branch which had no changes since the 4.10 branch other than recompiling the plugin for 4.11. Second one is the 4.12 preview branch (requires 4.12 preview 3) with the new Planar Reflections that were added by Epic.
The PlanarReflection scene actor also comes as a blueprint component, which has been attached to the BP_Ocean blueprint 360 units above the surface and scaled up to cover the whole plane. Performance did take a bit of a hit, but considering the increase in quality it is well worth it (not a lot, only 5fps on my machine).
Anyone who is interested in using the 4.12p3 version should read up on the limitations so far, and also a bug that affects editor performance when adjusting parameters (not in game). This is just an initial commit with the base feature implemented, any fixes that arise will be added as possible.
Let me know how it goes if you try out 4.12!