Martin Jensinger

ProfMobius are you unable to reproduce the lag even with the nether zombie farm ? Sorry if you answered this already somewhere but I don't have time to check.

Not fixed for me in 16w14a.

I'm starting to think that this isn't just 1 issue but it's multiple issues each adding to the lag. Anyway, its better than what it was before (for me), now it only takes ~5-10 seconds for the zombies to speed up and when they're moving slow they aren't quite as slow as they used to be.

@Roadsguy the lag appears in singleplayer on a rather powerful PC aswell so I doubt you can run any server with a even just a few people without noticing alot of lag unless none of the players are doing any redstone clock stuff or big mob systems.

This is very much not fixed in pre3.
I don't understand why this hasn't been fixed yet, I mean it was introduced in the same update as the new pathfinding was it not ? How can this bug be so hard for them to track down and fix ?

They should find out if it really is the new pathfinding code that's at fault and if it is then exclude that code for 1.9 and reintroduce it later when it's been fixed.
I wouldn't be surprised if this isn't fixed for 1.9.0.

How is this a duplicate of MC-94438 ? This guy is complaining about his FPS and MC-94438 is about server-lag and as far as I know that has nothing to do with the amount of FPS that the client has.

Here's a log from the gold farm in the nether.

Jono, I don't have any problems at all with any kind of lag when there is tons of mobs. A gold farm in the nether for example, gives me no lag at all as long as I turn off the redstone clock so I think that this is either a separate issue or its the same problem and the redstone clock is just pushing it over the edge.

Meri Diana I mean the regular redstone clock, no commandblock stuff.
Also I assumed that the other half was the optimizations that ProfMobius was working on and I assumed he was done with those since this was marked as resolved.

@Liam Scott: make a redstone clock near any mob system and you'll see that there still is extreme lag.

Maybe this has to do with render distance ? I have massive lag spikes too when entering the Nether but if I lower my render distance to <10 chunks before I enter the Nether there won't be any lag.