I have yet to see Gearbox acknowledge the FPS drop issues. There are hundreds of posts and reviews outlining the issues most of us are having, But have seen zero response from Gearbox pertaining to the issues. At least from what I could gather.
As it stands, Yes… the game is playable, But FAR from enjoyable with the constant frame drops.
Most notable from my experience is the frame drops while aiming down sight. Drops from 120 FPS down to 60, But feels more like 15 FPS.