Have you tried
lowering increasing the percentage value like
x -> lerp( Self.X, Player.X, 100 * dt )
y -> lerp( Self.Y, Player.Y, 100 * dt )
Then it will stay really tight yet it might be enough to not jitter.
Tried this, though the camera is super snappy on startup, and the jittering still occurs.
This is exactly what I'd like to happen in my demo. Unfortunately, given my interests I don't think I'll be able to sink so much money into just a demo.