03 Passat Random Cylinder Misfire

03 VW Passat with multiple random cylinder misfire. Its my wife’s car, so I didn’t hear anything leading up to it or anything, she just called me and said the CEL came on and wanted me to fix it lol. so I had her come home and I plugged in my scan tool, and it threw 5 codes. P0300, P0301, P0302, P0303, and P0304. I checked under the hood and listened closely to everything I could think of, took off the plastic cover and listened closely to the valve cover but didnt hear any strange noises. My scan tool (the U-Scan) allows me to view live engine data and everything seemed to be running normally. I cleared the codes and sent my wife on the way with some reservations, and told her to keep a close eye on everything, but she reported that it performed as usual on the way to school. After 6 hours of sitting she drove it home and no issues except she said that it slightly revved occasionally as she was driving. When she got home I immediately went out and plugged it in again only to be stumped to see exactly what I had seen in the morning. So I come to you wise peoples. Please help me lol. I am stumped.