I think that's one of the most frustrating think about NetGalley - my rating would be higher if not for my mood for what/when I reading. I can't keep any kind of schedule on it really.
Mood reader here too.
The %% makes it seem like a second job, with a forever performance review, so I stopped for a few years. I stayed with just edelweiss.
Now I have NG again because the only ones who see edelweiss are publishers and booksellers. Readers can see NG.
I don't do GR or Storygraph.