In what sense? I only get glitches in Mathematica when I am hitting extremely huge curated data from Wolfram and trying to do something at the same time. I have

In what sense? I only get glitches in Mathematica when I am hitting extremely huge curated data from Wolfram and trying to do something at the same time. I have only used Jupyter notebooks for a page or two, and mostly toy problems, so I can't say I have stress tested them. I do like Hydrogen, though.