Give MemoryFixer Script (I dont remember where it is.)
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MemoryFixer.js (needs core to work)
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I recommend using memory fix mod, it is like in every 1.8.9 Hypixel PVP mod pack ever so its pretty popular in my opinion and it just works perfectly and doesn't break Liquidbounce (at least I didn't see it break anything) https://prplz.io/memoryfix/ (This is just a suggestion BTW, I'm using it to fix my memory too because it used to go up to 4 GB ram which is annoying)