Hello! Sorry for not sure if you can see the pictures.
I am a PhD student studying in 3D printing. Now I am using Ultimaker2 to print some PLA models. However, there are some problems about resolution and quality about printed models. Some of the overhanging is not connected well in one printer(cc'ed picture). But this problem does not happen in another printer. Both of the printing programs and print materials are the same. I am really grateful if you can help me solve this problem? Which step could be the key problem and how to fix it? Thank you so much for your help! Looking forward to your reply!