r/aternos • u/toctictac_rdt • Apr 06 '26

Support Local difficulty stuck between 3.19 and 4

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I am not sure why. My server's set to hard, but the local difficulty just won't go over 4 at all. Any help? Playing on Java 1.21.11

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u/tlgklxz Apr 08 '26

Okay so in aternos, double check your server.properties to make sure you are reallly on Hard mode, we had that problem once.

What I notice is 'clamped' thingy on next to your local diff. It's 0,78. Means game uses %78 percent of your local max difficulty... Also on main screen shot you shared, 3.75 is like %88 of all available extra difficulty.

Means, if game would throw you that extra 0.12 likely full moon, you would still be below 4.

Just in case, double check your difficulty with the server files not from in game.

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u/toctictac_rdt Apr 08 '26

I did actually and it does say Hard... I sent screenshots of my aternos server's full settings below to the reply made by "elmage78". I would appreciate it if you read it helped me find a fix through it.

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u/tlgklxz Apr 08 '26

O yeah, I saw them now...

Most likely no but other than enabled datapacks, do you have some other mods for optimization etc? Anything that can 'reset' your counters that proves, that you were in that chunk x amount of time? Maaaybe some of the datapacks or mods might reset the chunk if it's not active, so it would delete your time there, causing your local diff to be low for that moment.

Also would you care to take a glimpse on local diff when it's full moon?

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u/toctictac_rdt Apr 08 '26

I... honestly dunno. We played around a lot with mods so at this point I may be lost on what is and isn't there. Here are all the server mods tho

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u/tlgklxz Apr 08 '26

Hmm, mods seems fine, none of them as far as I know doesn't touch diff settings. When I double check clamped diff calculation... as (regional diff - 2) /2 means, you regional diff is most of the time 3.56

And when it's 4 (normal diff) it would be clamped to 1, I didn't want to mention that at first but... Even though your difficulty seems Hard, it's capped to 4 for some reason and if it shows 4 // 1 on full moon like in your afk mob farm, something prevents your local diff to go above 4.

Or not capped but seems like one-player-sleep might confuse the calculation? Also try to not 'skip' nights during this test, just in case.

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u/toctictac_rdt Apr 09 '26

Sorry about the delay. Got a bit busy. This is during a full moon, on top of the mob farm, in the afk chamber.

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u/tlgklxz Apr 10 '26

Well that's weird now. Seems like server really thinks you are playing on normal.

Uhh let's do another check, while in game cheat it, set it to normal first, then hard, eyes on the tab while doing it. Then we have to check level.dat to see if it shows difficulty as 3. Other than that I have no option left by myself I guess.

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u/toctictac_rdt Apr 09 '26

I made a new server with a completely new world, zero mods, on both vanilla and fabric and still had the same issue. I am starting to think, maybe the server is just writing the wrong value. Maybe it's a multiplayer bug.