Nearly identical specs - 2016 “vintage” pc, home built. Only difference to your specs is 32 GB RAM. Runs MSFS very well and I also have most graphics on high, clouds on ultra as well as texture. It’s mostly smooth, but noticing a little bit more stuttering after latest update. Before that, was buttery smooth. It’s still highly enjoyable and I haven’t flown P3D or X-Plane in weeks for all the same reasons you’ve listed.