1. Civs randomly claims that I've broken my word not to buying land/settle even if I didn't do that (really annoying).
2. If AI builds a wonder, it is almost sure that it is built 1 turn before me, that is even not annoying but just sic. After some patch (I can't remember exactly which) it is impossible to build any wonder if you're not ahead in techs a lot, even if you have huge production (and you could have built a wonder in 4-5 turns). Cheating in Civ5 is enormous and makes it unplayable.
2. If AI builds a wonder, it is almost sure that it is built 1 turn before me, that is even not annoying but just sic. After some patch (I can't remember exactly which) it is impossible to build any wonder if you're not ahead in techs a lot, even if you have huge production (and you could have built a wonder in 4-5 turns). Cheating in Civ5 is enormous and makes it unplayable.