I finally made the plunge over the weekend.  It didn't take me longer to realize I needed to upgrade my system.  New system includes the following: Asrock Z390 Taichi motherboard, EVGA Geforce GTX 1070Ti, i7-9700K Intel processor, 16GB RAM, and a Noctua NH-U14S cpu cooler.  Guess what?  Game runs with all setting maxed out.  Stutter is gone.  My son was happy to build the system from scratch.  The only thing I saved was my full tower Corsair case.