lag spike when i install the DH version 1.21.4

when i install DH version 1.21.4, my game had a lag spike, im on a server of course. if it single player, my computer will screaming at me. i already add more RAM and even change it use ShenandoahGC JVM Argument but it still doesnt work. can someone give me a solution?

Windows 11 Home
RAM : 16 GB
Processor : 11th Gen Intel(R) Core(TM) i5-11400H @ 2.70GHz
Graphic Card : RTX 3050 4GB
Shaders : Complementary Reimagined
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