Large stutters only when DH is on both server and client

I have been playing on a server that did not have DH installed serverside and had no issues, now the server has switched to also running DH for distant generation and now I am getting large stutters clientside (about a quarter to a full second) every 5-10 seconds, my cpu, gpu and memory all seem to be perfectly fine, i profiled the stutters here https://spark.lucko.me/KlherjlhL0?hl=311

this even happens with distant rendering and generation turned off clientside
spark is a performance profiler for Minecraft clients, servers, and proxies.
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