1) Gameplay
Stamina recovery also depends on fatigue: at 0 fatigue 150% vanilla recovery, at max fatigue ~10% vanilla recovery.
When blocking at 0 fatigue recovery is almost same as in vanilla, at max is ~50%.
Time speedup will evenly increase by 1 each day, difference from vanilla: ~17% slower first day to ~8% slower last day.

2) Items
Food recovery changes (Hunger/Thirst/Fatigue):

•     Army rations - -45%H +30%T
•     Bread - -65%H +20%T
•     Can food - -45%H
•     Milk - -30%H -40%T
•     Tan - -20%H -20%T
•     Egg - -20%H
•     Fresh fish - -40%H
•     Jerked fish - -20%H +40%T
•     Fresh meat - -75%H
•     Jerked meat - -35%H +40%T
•     Pemmican - -25%H
•     Coffee - -25%F
•     Lemon - -15%F
•     Wallnut - -7%H
  

Stacks changes:

•     Empty bottle - 20
•     Flask blood - 20
•     Water bottle - 20
•     Blood - 10
•     Tvirin - 10
•     Diseased blood flask - 20
•     Wallnut - 15
•     Chestnut - 15
•     Peanuts - 15
•     Chalk - 15
•     Marbles - 15
•     Bug - 15
•     Hooks - 15
•     Raisins - 15
•     Kashk - 15
•     Broken Scissors - 15
•     Button - 15
•     Bandages - 10
•     Tourniquets - 10
•     Canned food - 5
•     Candle - 10
•     Cracker - 8
•     Shmowder - 10
•     Bread - 5
•     Army rations - 6
•     Milk - 6
•     Tan - 6
•     Fresh fish - 6
•     Jerked fish - 8
•     Fresh meat - 4
•     Jerked meat - 8
•     Immune boosts - 20
•     Panacea - 10
•     Watch - 10
•     Amulet - 10
•     Bracelet - 10
•     Bloody bandage - 20
•     Broken ampoule - 30
•     Soap - 10
•     Ring - 10
•     Metal scrap - 20
•     Spring - 20
•     Thimble - 20
•     Thread - 20
•     Tweezers - 20
•     Razor - 10
•     Needle - 50
•     Safety pin - 40
•     Cotton - 10
•     All herbs - 30
•     All tinctures - 20
•     All special brews - 10
  

No stacks for breakable items as they have a bug and a bug/exploit (as explained briefly in Breathing Room - Time and Space).
The stack is seen as a single item with just a number of items in the stack, if e.g. a lockpick is broken while using it the whole stack is gone.
This also reveals an exploit that allows to "repair" any breakable items for free as long as there are at least two of them and they can be stacked.
When a breakable item stack is split into two stacks game generates a copy of said item, the copy is a template of the item, thus the copy is in perfect condition no matter in what condition is the initial item.
Now if original almost broken item is stacked with the new stack it will just be deleted and the second stack will increase its stack count.

Immunity boost effect from immunity boosters for NPCs doubled (up to 60% boost with (+) variants).
Infection damage to durability for all clothes except DIY kinds reduced by ~30% (items will degrade a bit slower from plague).
Bandages and tourniquet are 50% more effective.

Backup Data folder.
Copy Data folder from archive to game folder.
For a finer install you can replace only specific files: Action.xml - timescale, Parameter.xml - stacks, 2.xml.gz - gameplay and other changes

Restore Data folder or recheck game files with Steam.