Extreme frame drops on my island

[borkogot]

I tried to get back into skyblock after not playing for a year and I installed some mods on 1.8.9 which you can see on the images I've attached along with a lagometer showing one of the framedrops. The game randomly freezes even when not on the island but on my island I get those freezes very frequently like every 10-20 seconds consistently

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