Mine didn't creak but did come loose often on my 2019 Fuse. Specialized and shop said safe to really crank it down, which I have done and does help a lot. What I also do now is mark with white crayon after I tighten, so can easily check if it's slowly coming lose.
Thanks for that insight, glad to know its just not only me. Last night was the 2nd time in the last couple of months that I had a creak/pop that was aggravated by aggressive pedaling that turned out to be the rear axle just being a "little" loose. With my SWAT tool I was able to get a little bit of turn out of it on the trail which quieted it down enough to make the ride bearable, but when I got home I pulled it (bone dry), lubed it with some slick honey, and used a t-handle allen wrench to really torque it down.
But man, it was one of those rides where I couldn't figure it out; I just had Eagle installed so I was sure it was that, or maybe it was my Race Face crankset with the OneUp Switch ring (either the CR bolts or the cinch interface, a lot going on down there), or hell maybe it was my seatpost or saddle but I could replicate it when standing! Then I felt like it may have been coming from the bars...but no, just my ears playing tricks on me. Was the rear axle all along.
Hoping to be back to quiet bliss on the next ride, because I hate miscellaneous noises.
EDIT: kevin_sbay: did they give you a specific torque value for the rear axle?
