Ha, I am now running into this with a bike I just put together.

I'm using a 32T max cog and a long cage Deore derailleur. I've adjusted it to a point where the end of the screw is just barely catching the stop.

I'm still getting some noise but it's tolerable for now.

What is the solution? I know some people run a 34T so there must be something I'm missing.

Cheers