Well. Hmm. Thanks for the link. I read through it all and didn't really think it was worth it.
Yes. I print as fast as possible. My printer differs from Um2 mostly by structure. There may be more to it!
I currently don't agree that lowering the temperature is the best option and said in the same line, I would rather try to keep the speed up and think of adjusting the model to fit the printer.
Much as I'm used to from my engineering background.
The high temp you are showing could be because you are printing so fast. I can hardly believe the filament stick well on the bed at that speed. Two missing variables is the layer height and nozzle size since it will affect a lot the volume that is outputted from the nozzle.
The size of the heater block and the length of the nozzle are a big factor in the temp to use. For example the UM1 and the UM2 have a big difference in the size of the heater block which change the possible volume output for the same temperature.
Moisture could be a factor too.
I usually print with the bed no more than 60C for PLA. At 75C you might get the base of the print to cave in a little. http://support.3dverkstan.se/article/23-a-visual-ultimaker-troubleshooting-guide#wallcavein
On the UM2, I print around 200C most of the time but also usually print around 30-40mm/s at 0.1mm layer height.
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