slowness

I've been somewhat frustrated with the performance of my rMBP (early 2015, 13-inch) with Catalina. Safari feels sluggish (it kind of "jerks" and "stutters" on many major websites). Finder isn't bad, but there's this sense of slowness that wasn't there before. My rMBP has an i7 processor, 16GB...

Does anyone else experience slowness with creating desktop items via drag-and-drop? It's been like this for the last couple years and it's still an annoyance. I'm wondering if it's just me and some software I have installed or does the Finder really have issues with drag and drop? Here's a...