So I have been playing plate armored melee characters for long time, and I have a lot of food/resources.
When I now use a crafted Hearth Stove(lvl 2) or a Cook stove(lvl3).
It will say craft < x1 > .
Now when I hit the W key for Max amount, the game freezes for 12seconds.
During this 12seconds if I click the screen the standard windows popup of no responding of windows will popup untill its done loading.
Also a minor thing the game will show 2 popups on left and lagg a bit while that happens.
It will devide the 99 up into 50 and 49 or 54 and 45 in case of the this screenshot:
I have al the houses and alot of chests 
The crafting bench is in The Knot.
And all the Food is in the Homestead in a single cubboard.
But I assume the game will go thru all chests anyway.
My C:\Users\%user%\AppData\LocalLow\Moon Studios\NoRestForTheWicked folder:
Realm “Normal“
Was using character “Paladin” (can craft all food).
Hope the dev’s will be able to optimize this
These numbers load real fast:
So not sure why there is 12second lag in changing x1 to x99.
And then crafting also lags a bit.
After rebooting the game, and joining the realm doing it again it still takes around 12seconds.