I had the same problem. I solved it by going to "settings" in Microsoft Edge and turning off "hardware acceleration".
Just ordered & received the new Inspiron Desktop 3891 for my father-in-law, its meant to be an up-grade from a PC that is 8 years old, but its so slow its painful. Its only just been purchased and data migration is completed, but I need to get this PC moving faster asap. Any ideas?  I have down loaded all the up-dates available and there is no change at all.  TIA
Inspiron Desktop 3891 - super slow