I don’t think going from 5W-20 to 5W-30 would make the engine noisier or run less smoothly. If you aren’t imagining this, then something other than the viscosity of the oil is causing the engine to run noisier and less smoothly.
Years ago, I had the engine become noisy on a 1985 Ford Tempo. The hose from the air cleaner to the fuel injection system had come off. If, in fact, your engine makes more noise, look under the hood and see if the air intake hose is in place or some other obvious thing has happened.