I have also an Um2+ in the s3d forum you will find my profile which is much different then the standard s3d profile. Maybe this will help you with the settings. Using it for a year now, much better results then printing with cura. Also the um2+ has a problem in the cooling fan design. The airflow isn’t good enough at 100%. This is especially seen on hanging parts and thin edge parts which curl up. 220 degrees nozzle works good on my um. Lowering the nozzle temp gave me other issues like layer binding not good.
I have a file that I find works well on both my UM2’s that you can import in to S3D. Of course it’s up to you to use the file and it’s set up for a specific material I use but you are free to use it as a starting point.
My experience is completely different about Cura vs. Simplify 3D quality of prints. Probably because you always need to make perfect fit settings to object
What I’ve found is that Cura oftentimes simply ignores some surface details when it reads an .stl file. That is my biggest gripe with the software. For ease of use, sure it’s good, but it tends to get hung when manipulating large objects, as it tries to constantly slice rather than allow one to change the object orientation and adjust all your supports etc and only then slice the final piece.
We would recommend turning off coasting and also turning off wipe at end.
lower your retraction speed to around 1600. But first turn off retraction and then keep testing and turning your retraction up by 0.02 until you get it right - this is linked closely with the extruder temperature you should be able to find the ratio between them it just takes time. There is also a setting that says avoid outline, set this up so you minimise how often the print head needs to cross the outline.
I believe it’s what the standard S3D profile gives when you input .40 for the nozzle diameter and have the automatic multiplier selected. It looks fine to me.
I printed mine on normal quality, nozzle 0.4 infill 20%, I can’t remember the rest of the settings using cura 2.04, rigid ink pla and it came out fine, I think I still have the photos on my hub, check them out