I can't answer as to whether things have changed because only been playing since H&H. However, as above have mentioned, it's all about the type of food you eat and also about what you are doing. Some creatures attacks drain stamina quickly. for instance when I fight abominations in the swamp, I go toe to toe and don't use a shield because the attacks don't do a great deal of damage (plus I'm hard as nails :-) ) but stamina drops to zero real quick. So I either eat stuff with high stamina or take stamina potions with me.

If you are using a different character then it just might be the skill difference.
I don't think any major changes have been made since H&H and its tweaks a while ago.

Originally posted by Bobucles:

The most relevant stamina nerfs are:
-Change to food system. Food now specializes in either boosting health or stamina, so maxing one means being low on the other
- Parry costs a huge chunk of stamina, directly nerfing bucklers and making basic blocks more relevant

Not if you use heavy or top heavy set , try to parry a troll with a troll set and BM shield , padded armor and bronze buckler
Or to see the real difference : padded set and bm shield and troll set and bronze buckler , top foods
Defense and health reduces how many stamina eats a parry

The most relevant stamina nerfs are:
-Change to food system. Food now specializes in either boosting health or stamina, so maxing one means being low on the other
- Parry costs a huge chunk of stamina, directly nerfing bucklers and making basic blocks more relevant

Food got a major update with Home & Hearth and then slightly re-balanced shortly afterwards when they realised it was skewed too far to the extremes. (Prior to H&H food just stacked and there was no differentiation between health/stamina.) As far as I am aware, it hasn't been touched since and I play almost daily.

You do have to be careful to balance out your foods depending on what you want to be doing in the game now. :)

Food got a rework so maybe check there first?

Course I didn’t start playing till after H&H so I don’t know if anything had actually gotten changed but I know they put more emphasis on food stuff.