> > -mt as a command has ceased to be. It may be revisited at a later date. > > Have not had time to test but I assume it just uses all cores by default now?
Multi-threading, in this case, involves graphics as it uses another core for the final drawing operation which in theory gives some performance boost for multi/hyperthreaded systems with slower video cards. The disadvantages simply outweigh the positives as this point so it was scrapped for now.