What player settings to run Travincal with?
For Travincal best setting is players 3. No if's, no but's, no when's. It is a pure fact confirmed by a test. On players 3 minions have 90% chance to drop item while on p7 they have 100%. Because of this and their HP bonus they get on higher players settings, on p3 you run them the fastest and if we include the fact they drop 90% items of those on p7, it is easy to conclude with test that p3 is simply stronger for farming. Stronger and safer at the same time. There was some rumor that Zealot paladin is fast enough on p5 or p7 to beat p3, but nope, it is not true. He is also fastest farmer on p3.
So, the answer is p3 if you want most efficient farming, or p1 if you can't handle p3, though in thatcase LK is just too strong to skip for Travincal on p1.