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MC-14983

Massive Lag when looking into direction of hoppers

I have an underground sorter system. It is not visible from anywhere above ground. I have about 40 fps when playing, but as soon as I look into the direction of the sorter system my fps drops to 10 and stays there until I look away.
I might want to add that not a single graphics setting could change that fact.

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kumasasa

Please force a crash by pressing F3 + C for 10 seconds while ingame and attach the crash report,
Can you zip and attach the world (or the relevant part of it) ?

Alexander Hammett

So, I deleted absolutely everything from my world except for the sorter system which contains the huge amounts of hoppers. I returned everything back to natural terrain, then set everything around the sorter system to air. My general FPS increased quite a lot, but the problem is still there. Looking away from the hoppers gets me 75 FPS. Simply turning around will drop the FPS down to 25.
I'll attach screenshots, the crash report and the zipped world now.

kumasasa

Confirmed.

To reproduce it's enough to look in the direction of the sorter, regardless if the sorter is visible or hidden behind a hill.

Alexander Hammett

Yes. As I said it does not matter if it's visible or not. I just removed everything else to make sure it's actually from the hoppers and nothing is interfering. Also the screenshots have been taken in 1.5.2, so I will add that version too.

Alexander Hammett

I just verified that the hoppers cause this. I made a superflat world with nothing but a huge block of hoppers. Looking away gives me 125 FPS. Turning around and looking at the block gives me 16 FPS. Ill upload the world right away for anyone who wants to test it too.

kumasasa

Also confirmed for test world.

kumasasa

That reminds me of MC-5534 where also a log of non-cubic, transparent blocks are involved.

kumasasa

... and MC-7895

Alexander Hammett

They seem connected. The interesting part with hoppers though is that it only causes lag while looking into their direction. That makes absolutely no sense. With Fences it's because they have a lot of sides to render I think and it also causes lag when looking away.

Alexander Hammett

Any updates on this? Anything from Mojang? It ruins the game for me 😞

Ezekiel

Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

William Grates

This is still an issue as well in the current version of the patch. I notice a detectable drop in FPS when looking at my hoppers in my creative world. Please fix asap.

Grave

Still an issue as of this post date.

George Hickman

Still an issue as of post date, using 1.7.2.

Anon Ym

I still have this issue in 1.7.4.
Tested with the Hopper Lag world that is attached, FPS drop from 50 to 8 on my laptop.
The Pie Chart in the Shift + F3 screen does not change significantly between looking at the hoppers and not looking at the hoppers.

ggxl

Probably relates to the issue where looking towards many chests would cause lag (I think Optifine helped the lag; it then only occurred when the chests were actually visible)

Charlie Denton

Yes, this still applies to the latest version of Minecraft (1.8.1), and the Launcher (1.5.3).

galaxy_2alex

Reopened, thanks.

kumasasa

Is this still an issue in the current Minecraft Snapshot 15w49b or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

Asteraoth

Confirmed for 16w15a and 16w15b

Asteraoth

Confirm for 1.9.3 pre-2

Asteraoth

Confirmed for 1.9.3 pre-3

Asteraoth

Confirmed for 1.9.3 and 1.9.4

Asteraoth

Confirmed for 16w20a

wobst.michael

Relates to MC-1138

CDES5

Likely affects version 1.11.2 as MC-1138

Asteraoth

Confirmed for 18w31a

wobst.michael

Does anyone still experience this in 1.14.3 pre-2? I just did some testing and I'm not seeing any noticeable FPS drop while looking into the direction of 47k hoppers.

Iosiv Visokogorskiy

this still happens in 20w27a?

[Mod] markderickson

Hi there!

Is this still an issue with any of the latest releases? If so, please add a comment or update the affected versions.

Alexander Hammett

(Unassigned)

Confirmed

Performance

Minecraft 1.5.1, Minecraft 1.5.2, Snapshot 13w18c, Snapshot 13w25c, Minecraft 1.6, ..., Minecraft 1.10.2, Minecraft 16w44a, Minecraft 18w31a, 1.14.4, 19w45b

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