If you've got a 3/8" output and you're using a 3/8" hose with 1/4" fittings, then you're probably limiting it somewhat. Probably not going to help much going bigger than 1/2" with 3/8" fittings. And like CNG said, move and/or crank up your regulator. Having it set at 95psi right by the compressor means that everything downstream is getting just enough air to keep 95psi with very little flow, and when you use more air than the regulator can supply, you're getting a SERIOUS pressure drop. Honestly, our 150psi compressor at work doesn't even have a reg, just a filter/drier setup, and it hasn't caused any issues. It is bottlenecked there, and one of my "around to it" projects is to replace the 1/4" fittings and 3/8" hose I used to get the shop up and running with larger fittings (pretty much everything had to be reduced from 1/2" or 3/8" NPT anyway) and hose to keep the flow up.