Fopnu is now consuming 8 GB of RAM on my system. Is there anything I can look at or adjust to lower that down, I don't recall Fopnu gobbling up so much RAM previously.

did you update recently?
when did you notice the increase?
how much is in your library?
do you run any channel? lots of people in them?

I dont run any channels but I have almost 9TB in 123,000 files and I use about 2-3GiB

given the size of your library; this honestly seems tame.
..what did it eat previously?

Normally around 6 GB, that is for over 100 TB of shared files and nearly 1/2 million files. I had been sharing my music singles which has a little over 1 million music singles files in 12 different musical genre, but after seeing my available ram disappearing, I ditched that offering. Perhaps that alone was draining 2 GB in indexing that music library addition alone, dunno.