When watching the video on my phone the creak is very loud, on my computer hard to hear until about 26 seconds in.
Will definitely check the headset today, it has been 2.5 years since I installed it, jiggle test doesn't find it loose but worth actually checking for sure.
I have ensured sure that the cassette is torqued to proper specs. What are people's thoughts on rear axle and QR. Could the axle spin nicely, not appear loose or overly tight but simply require additional grease after time?