So, I've been into PFS for about two years now. I truly enjoy this format. But lately, I've been having a rather difficult time playing a halfling cavalier. Most of the time, when I get a game with my usual GM, we get along fine. It is indeed very rare to get a rules straight, and I truly do rather RP then argue over rules. However sometimes, with a new GM (as is usual in PFS), they appear to think a medium mount is cheesy and put all sorts of unwarranted penalties.
Examples are: Ruling the medium sized dog / wolf / pony has to swim in knee high water, but lets the dwarf move along just fine. Penalties to ride checks when moving through an ally's square. Wont let a small cav ride mount up stairs. Ruling that a mount will only watch, while the cav is deep in combat, coz the dog / wolf / dinosaur somehow has turned into an automaton, and wont do anything as it doesn't understand common. Inconsistent DCs for jumps. Apparently for some GMs a fast 4 legged animal with a light load, will have a harder time jumping a 5 foot square then a fully armed & armored fighter.
Anyway, sorry for the rant. I just wanted to know if others have found certain classes difficult to play as the rules are just too unclear to get right given the round robin GMs PFS tends to encourage. I'd like to avoid these, and not waste another two years investing in a class that causes so much controversy.