Problem solved! Decided to follow your advice and install more RAM. When opening the computer, discovered newly installed video card was not seated properly. Took it out and put it back in.
Turned out, the new RAM had a faulty processor, so I sent my husband back to the store to return it. While he was out, I tested Premiere Pro as well as After Effects and it ran like a charm, even without the additional RAM!
Hubby came home with new (non-faulty) RAM and as a special surprise, brought home an SSD drive…
Even though my problem was technically solved by re-seating the video card, you gave some great advice, now I have more RAM and the additional SSD drive….Thanks 😉
Andrea