Horizontal Size Compensation Causing Quality Issues!?

[MCP]

Anyone using Horizontal Size Compensation (HSC) setting seeing strange behaviors (inducing ripples/wobble)? In the image, the top (1) and bottom(5) are printed at 60mm/s without HSC enabled. Prints 2-4 has -0.24mm for HSC. Prints 2 and 3 are based on the same gcode: -0.24mm HSC, 50mm/s, printed back-to-back. Print 4 has -0.24mm but at 60mm/s.
In summary:
1) 60 mm/s, 0mm HSC (baseline)
2) 50 mm/s, -0.24mm HSC (large ripples and a semi split layer)
3) 50 mm/s, -0.24mm HSC (large ripples)
4) 60 mm/s, -0.24mm HSC (ripples)
5) 60 mm/s, 0 mm HSC (back to baseline)

The printer is Robo R1+ with Micro-Swiss 0.4 nozzle. Running Marlin 1.1.1-Mesh Leveling
The material is 1.75 (~1.70 actual) eSun Silver PETG printed at 240/75
Some of other common settings: Layer=0.20mm, Retraction=1.5@30mm/s, Z-hop=0.8, Coast = 0.2
STL used: http://www.thingiverse.com/thing:277394

[brian442]

I think your problem is not due to size compensation. I use that setting all the time without any issues. It looks like you have other extrusion/z-wobble issues you need to fix first.

[MasterFX]

I would also say that you have a general problem with your printer. So with your setup it doesn't make any sense to research influences of an setting to a printed part.
I mean... look at my results @ 50mm/s without any tuning on my cheap Anet A8. Wellof cause they are not perfect, but mostly because of untuned retraction