10 plates isn't too bad, only dropping to 40-50, but 20 plates seems to put me down to 30~ - seems to only be an issue when in combat, out of combat with the mini-frames isn't as bad. It was when moving the camera with lots of nameplates on-screen. So! is there any lightweight nameplate addon (plater had A LOT of options that i really did not need at all) that has been updated or created for legion adventures? ta~ i set the nameplate distance to 40 yards and it was still dragging me to around 30fps (down from 70-90) with only 10 nameplates in view-able distance. i've been playing beta for a couple weeks and until yesterday was just tanking with the blizzard nameplates - but something about the way they stack / overlap and the inability to resize them (biggest thing for me) makes me feel the need to have an addon.Д«ut yeah i had no fps problems before trying out this addon, so i feel like it is probably that eating up cpu power. Right now, i am trying out a new addon called 'Plater,' it looks nice, but. sadly it broke, and it has broke beyond my ability to bodge it back into working order (though i didn't put much effort in, maybe i will try again tomorrow) in a way it was fairly similar to the new nameplates we have in legion now. So i used to use something called pNameplates.

Best nameplate addon legion