I'm new to ArcMap 10.6.1 and am experiencing extraordinarily slow performance and almost zero map refresh. When I first launch the program and add/explore data, I don't have an issue, but within minutes the program slows to a halt. If I add or move files, the map only updates if I move the directional arrows, and even then it's at a snail's pace. The refresh and pause buttons don't work at all. I thought it was a cache issue but trying to "clear cache" doesn't help (the cache won't even clear after I hit the button, or it only clears slightly), and I've also set geoprocessing never to save results. I've uninstalled/reinstalled the program with no luck, as the same problem is encountered. My hardware is more than sufficient. Can anyone advise?