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Fast Workbench Mod FAQ

20 questions players actually ask, answered.

How do I make shift-click crafting faster with Fast Workbench?
Just use the vanilla workbench normally and shift-click your result out as usual. The mod automatically caches the last recipe you crafted and checks it first, so repeated shift-click crafting of the same item speeds up without any setup.
Do I need to configure anything to get the performance benefits?
No. The recipe caching, reduced packet sending, and disabled recipe book all apply automatically to the vanilla workbench once the mod is installed.
Why did my recipe book stop working after installing this mod?
Fast Workbench intentionally disables the recipe book in the vanilla workbench by replacing it with a version that does nothing, since the book was generating network traffic for a feature many players never used. This is by design, not a bug.
Does Fast Workbench work with modded crafting tables?
No, its changes only apply to the vanilla workbench. Modded crafting stations are expected to handle their own recipe caching, so the mod won't speed those up or fix lag there.
Why is my 2x2 player crafting inventory still slow?
Fast Workbench only affects the vanilla workbench block, not the 2x2 crafting grid in your inventory. Lag or slowness in the player crafting grid comes from something else.
How does Fast Workbench reduce network traffic on a server?
It sends a packet only when actually needed instead of every time a slot in the crafting grid changes, and it disables the recipe book packets. Together these cut down the traffic the vanilla workbench generates.
I still have crafting lag after installing Fast Workbench. What now?
Check whether the lag is coming from a modded crafting station or your 2x2 inventory grid, since Fast Workbench doesn't touch those. If it's a vanilla workbench still lagging, another mod or a large recipe registry is likely the cause.
Is it safe to use Fast Workbench on a server with lots of players?
Yes, it's designed to reduce server-side crafting traffic and speed up recipe lookups, which helps on busy servers. Clients and the server should both have the mod for the full benefit.
Does Fast Workbench change any recipes or add new items?
No. It only changes how the vanilla workbench handles recipe lookups and networking, and it disables the recipe book. No recipes, items, or blocks are added or altered.
Can I re-enable the recipe book while keeping the other Fast Workbench features?
The recipe book disabling is part of how the mod reduces traffic, so it isn't meant to be selectively turned off. If you need the recipe book, you'd have to remove the mod and lose the caching and packet optimizations too.
What does the Fast Workbench Mod actually do?
It speeds up crafting in the vanilla workbench by caching the last recipe you used and checking it first, and it cuts network traffic by only sending a packet when the crafting grid actually changes. It also disables the recipe book in the workbench to save further traffic.
Do I need to configure anything to get the speed boost?
No setup is required. Once the mod is installed, the vanilla workbench automatically caches your last recipe and skips the full registry scan, so shift-click crafting is faster right away.
Why is my recipe book gone or not working at the workbench?
The mod intentionally disables the recipe book in the vanilla workbench to reduce wasted network traffic. Use JEI or a similar recipe viewer to look up recipes instead, since the disabled book no longer functions.
Does this mod work with modded crafting tables?
No. The caching and traffic changes only apply to the vanilla workbench. Modded crafting stations are expected to handle their own recipe caching, so this mod won't speed those up.
Will this fix lag in my 2x2 player crafting grid?
No. The mod only affects the vanilla workbench block. The 2x2 crafting grid in your inventory is untouched, so any lag or slowness there comes from another source.
How does the recipe caching actually make shift-click crafting faster?
Instead of re-scanning the entire recipe registry every time you craft, the mod remembers the last recipe used and checks it first. When you're shift-clicking the same recipe repeatedly, that check hits immediately and skips the full scan.
Why does the mod reduce network traffic, and does it matter on singleplayer?
It sends a packet only when the crafting grid actually changes, rather than on every slot update, and it disables the unused recipe book. On singleplayer the savings are minor, but on a server with many players crafting it reduces load noticeably.
Is Fast Workbench compatible with other crafting or recipe mods?
It generally works alongside recipe viewers and most content mods because it only changes vanilla workbench behavior. If another mod also overrides the vanilla workbench or recipe book, test them together to make sure they don't conflict.
My crafting is still slow even with this mod installed. What should I check?
Make sure you're crafting at a vanilla workbench, not a modded station or the 2x2 inventory grid, since those aren't affected. If it's still slow at a vanilla workbench, the lag is likely coming from another mod or the server rather than the workbench itself.
Does disabling the recipe book break anything else?
It only replaces the workbench's recipe book with a version that does nothing, so no recipes or items are lost. You just lose the in-workbench recipe book UI and should rely on an external recipe viewer instead.