2005 Chevrolet Equinox Engine Warm You Try Speed Quickly Cuts Out Take Easy

when engine is warm and you try to speed up quickly it cuts out. if you take it easy it goes just fine. pulled the codes and get a multi mis fire code. have changed plugs, wires, mass air, and coil. it ran good for a few days and started doing it again. it idles just fine if you give it gas while in park it runs fine , only when it has a load on the engine does it cut up.