Here is a little test I make with my addon to simulate cloths.
The result is not too bad. The setup is not too hard to do. It’s planes with grid distributed particles on surface. Each plane have 100 x 100 particles ( 10 000 in totals for each plane ). The cloth you see changing color have a special material to see the velocity of particles.
Numbers of particles: 100 000
Numbers of frames: 320
Simulation time: 33 sec / frame ( 3 hours )
RenderTime : 4min / frame (10 hours)