end turn hang: play on a big map with many opponents set to insane - may take a while to happen, well known bug
tactical combat stuck: still happens in 2.4, also well known bug, its possible the odds of it happening are lower than they used to be, only seen once or twice in 2.4
movement bugs: if you dont 'count' tiles yourself and dont min-max you may not notice them at all, there are several different ones
update bugs: easy to check if you are affected; example: look at the overland map with your town without having the town selected. Change tax rate so that the production time becomes different. If this immediately shows then you are not affected. I would be curious if this is indeed dependent on something. (There are many more similar update bugs.)
Hm, thanks for clarification, I'd need to check it more meticulously.
I always play on biggest maps with plenty of resources, abundant monster lairs, many quests and many random events, but with research rate at Normal and magic strength at Normal too. As for opponents, I always played against 9 of them using "classic lore" personalities (i.e. Relias, Carrodus and so on) of "classic lore" kingdoms/empires (i.e. Altar, Capitar, Tarth and so on), without Undead and alternate double variants of standard factions.
So there's little chance I'll meet "end turn bug", I even haven't noticed any significant turn processing lags, even in the game end phase, when cities and armies are aplenty. And my CPU is as old and weak as any other component of my gaming PC, it's just some early 2-core Intel one, 2GHz IIRC.