[jb_camaro_2ss]

I'm having a misfire on cylinder 5 (P0305 code) and I'm trying to figure out what to do next. It only happens after idling for a few seconds, illuminating the stabilitrak light, no matter if the engine is cold or warm. If I drive the car around the block, the stabilitrak light goes off and everything feels/sounds normal until it's time to sit at a stop and idle.

Here's what I've done and verified so far, clearing the code after each fix attempt, but the problem and code came back after each thing I did:
- Cylinder 5's spark plug looked great, replaced anyway
- Replaced the wire to cylinder 5
- Swapped cylinder 5's coil with cylinder 3 to see if the misfire would change cylinders... it did not
- Replaced the fuel injector and filled up with fresh gas

I'm outside of the warranty and I'm not sure what to do next to solve the problem. What do I need to check at this point? 2017 manual SS with 66k miles