If you fill a chest to the brim with blocks/items, then have a hopper run into it with different blocks/items than the chest has, the hopper with consistently attempt to put those items from the hopper into the chest, causing placing, block, and sound lag. (Probally more too)
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Steps to Reproduce:
Get a chest (double or one), and place one of (for example) cobble stone in each slot
Then place a hopper going into the chest, with (for example) bricks in each slot
If you have multiple of theese, then the lag increases exponentially
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What should happen:
The hopper should stop attempting to put the blocks/items in, until there is a slot open for it to do so
Related issues
Comments
GoldenHelmet
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I don’t want this to sound mean, but is it being fixed? Or is it gonna stay? People who wanna experiment with hoppers starting off can have issues with this
GoldenHelmet
Mojang doesn't publish their plans and priorities for fixing reported bugs, sorry. I am going to update this report this to "Community Consensus" because it is a well-known issue among some player communities, but I'm not sure if Mojang will ultimately want to track it as distinct from MCPE-68796.
It might help Mojang to understand the impact of this issue if you could give more details, such as
your device
the simulation distance of the affected world
the number of hoppers pointing into chests it takes to produce noticeable lag
if you can quantify the lag in some way, e.g., "it takes X number of seconds for a block I place to show up near my storage hall".
I personally have never experienced hopper lag in my local survival worlds where I play with one or two other family members on a world hosted on PC, and have a most a dozen item filters in any one area.
migrated
I’ll be able to give a detailed explanation tmrw
For now:
Windows 10
2. It isn’t lag, its this block lag, its hard to explain, instead of lagging, it will affect opening your inv, dropping items, damage, block placing, sound, etc
migrated
Could not reproduce.
Can you upload a video showing the issue? If the video is too big you can upload it elsewhere and link it here.
migrated
Alright, I can show u the video in which I’ve seen a player show it, right here, look for when he shows the hoppers
migrated
https://youtu.be/rMERsHtWW0I, it isn’t my video, but this shows the hopper glitch in action, along with other issues
GoldenHelmet
Thanks for the video link. The video description explicitly references MCPE-68796 for this bug. And, we have also resolved MCPE-136154 as a duplicate. I am going to resolve this report as a duplicate and update the summary of MCPE-68796, since it is really the same issue.
Arisa Bot
This is essentially the same issue as MCPE-68796, it just happens with a smaller number of hoppers and chests when dealing with full shulkers because shulkers have so much more data than regular item stacks.
Advanced storage designs lock the hoppers to prevent this lag, and indeed the ratio of locked to unlocked hoppers is one of the criteria for evaluating a bulk storage design among technical players.