I collected about 400s of data and stopped it. It's been stuck on this page for 18hours now. No increased CPU usage (more than the page spinning at least) and

I collected about 400s of data and stopped it. It's been stuck on this page for 18hours now. No increased CPU usage (more than the page spinning at least) and no crazy memory consumption. https://imgur.com/a/aXNtvQ5 https://imgur.com/a/aXNtvQ5 What am I doing wrong?