Hello, I'm a little disappointed with the first printing ... why so wrinkled and dark (burnt?) Spots in the object ???
Whats going on here ? If possible answer German, my English is “modest”, thank you 
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Voraussichtliche Druckzeit: 2h 10m
Materialverbrauch: 5.47m (14g)
Drucker: Zortrax M300
Profil: Letzte Einstellungen
Material: Z-HIPS
Schicht: 0.09 mm
Qualität: Hoch
Füllung: 40%
STL: http://library.zortrax.com/project/sd-hinged-cover/
ZCode: 4727
Looks like the fan does not do its work.
Try to print two of them simultaneously, at distance to each other. So there is time for cooling.
regards
Andi
No, both fan's works (Test in Menu) ..
Now I am very disappointed and angry.
The next print is completely out of the question. Flat surfaces prints the M300 without problems. But as soon as curves are printed upwards, we destroy the “back” part and ONLY the back part of the print. The nozzle was cleaned after the last fiasco, leveled bed. It prints ONLY in the REAR of the print object and in curves in the amount of dirty, out of round, uneven and color “burned”. Fans seem OK, filament runs clean from the roll. Printer seems defective !!!
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Voraussichtliche Druckzeit: 2h 0m
Materialverbrauch: 5.29m (13g)
Drucker: Zortrax M300
Profil: smooth finish
Material: Z-HIPS
Schicht: 0.09 mm
Qualität: Hoch
Füllung: 30%
STL: http://library.zortrax.com/project/zortrax_m200_sd_cache/
Z-Code: 4736
Finally, here is a test file for a printer test that looks just as gruesome in places and the material has changed again in color.
But again only in the back !!! That for a >3000 € printer. WHAT is going on with this printer ???
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STL: https://www.thingiverse.com/thing:1363023
ZCode: 4745
In your first two examples, I think the problem, as goldenage said, is that there is not enough cooling time between layers. You have a small vertical feature, so the nozzle is spending a lot of time in a small area and the filament is too hot and cannot cool between layers. As goldenage suggested, you can print two copies of your object so that there will be more cooling time as the nozzle moves from one to the other. Or you can try "auto" fan or 100% fan speed.
For the last test, that is a crazy "torture test" object, and very hard to see what is happening from your photos
