Car runs bad

Hey. my car recently threw a random misfire code, and I erased the code and it came back on not long after. Anyway, the car had been running good up until then. It still runs the same as it used to for the most part. But when I got in it the other night, once I hit about 115, it started sounding like a machine gun and stopped pulling. Its like the car hit fuel cut, but according to my wide band, it had plenty of fuel. The car did it again tonight once I hit about 90, and again, the AFR's were correct, so its not a fuel related problem. So my guess is that its ignition related since I had a CEL for random misfire. What do you guys think?

Change the plugs and see what happens.

Good idea, they havent been changed in a while