Apologies for delay; still in trouble? Might be a tricky one, maybe a bit more info will help round it down?
Hmm. Very even pitch on that waviness - what layer height is that at? Can you measure the pitch of the waves with a ruler (measure 10 peaks distance and divide, for example), that might give a clue.
I assume the print is prismatic (same section all the way up), so the wave pitch could be in either time or z axis. Can you try something like 30mm cylinder with a 20mm cylinder stuck on top (e.g. attached) and see what happens? If the waves are the same on both cylinders then it's a z problem, if the pitch changes it's a time (probably temp or extruder) problem).
In the interim:
* What does your temperature graph look like (bed and extruder) - are they dead flat or do they have waves?
* Did you tune your motors as part of calibration? Does your extruder stepper driver (square black chip on the motherboard closest to the extruder motor plug) get hot?
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SD3. Mk2b + glass, heated enclosure, GT2 belts, direct drive y shaft, linear bearings, bowden-feed E3D v5 w/ 0.9° stepper
Smoothieboard via Octoprint on RPi