Problem solved.    I started with Dell Inspiron 3847 (Intel 4 Core i5-4460 @3.20GHz), 16GB RAM. I refuse to consider that an antique.   I tried a number of graphics cards (thanks, Amazon return policy) and ended with   AMD RX 560D-4G D5 from Yeston. 4GB GDDR5 128bit Gaming Video Card, PCI Express 3.0 x 8, DirectX 12, OpenGL 4.5, Desktop Computer Low Profile GPU with VGA/DVI-D/HDMI Tri-Ports $260 from Amazon: https://www.amazon.com/gp/product/B097P3YP4G/