Self-hosted Modded MC Server - Chunk Generation very slow

Hello! Looking for a little help in determining which mod/mods would impact server performance - specifically chunk generation.

Some info:

Host OS: Unraid
Server is run in a container using itzg/docker-minecraft-server image
MC Version: 1.16.5
Forge version: 1.16.5-36.2.34


My compose file:

services:
  mc:
    image: itzg/minecraft-server:java11
    restart: unless-stopped
    tty: true
    stdin_open: true
    ports:
      - "25565:25565"
    environment:
      EULA: "TRUE"
      MAX_PLAYERS: 20
      TYPE: "AUTO_CURSEFORGE"
      VERSION: "1.16.5"
      MEMORY: 16G
      MOTD: "WELCOME TO PIXELMON"
      
      CF_MODPACK_ZIP: "/data/Pixelmon-BadBatch.zip"
      CF_API_KEY: "[REDACTED]"  # Use double quotes for proper escaping
      CF_SLUG: pixelmon-badbatch
      CF_OVERRIDES_EXCLUSIONS: |
        config/*
      USE_AIKAR_FLAGS: "TRUE"
      
    volumes:
      - /mnt/user/pixelmon-prod/pixelmon:/data

  restarter:
    image: docker:cli  # Fixed indentation
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock"
    entrypoint: ["/bin/sh", "-c"]
    command:
      - |
        while true; do
          echo 'Sleeping for 8 hours...'
          sleep 28800;
          docker exec pixelmon_prod-mc-1 rcon-cli 'say The server will restart in approximately 10 minutes.';
          docker exec pixelmon_prod-mc-1 rcon-cli 'say Wrap up what you are doing. This cannot be stopped.';
          sleep 580;
          docker exec pixelmon_prod-mc-1 rcon-cli save-all;
          docker exec pixelmon_prod-mc-1 rcon-cli 'say Server has been successfully saved. Anything past this point is likely to be lost.'
          sleep 20
          docker exec pixelmon_prod-mc-1 rcon-cli 'say Server restarting in 5 seconds.';
          sleep 5;
          docker restart pixelmon_prod-mc-1;
        done
    restart: unless-stopped

Mod List:

Pixelmon-1.16.5-9.1.13-universal.jar
"Rechiseled Compat-1.0.5.jar"
ScalableCatsForce-2.13.10-build-11-with-library.jar
EnvyHunt-Forge-4.4.1-1.16.5.jar
Mekanism-1.16.5-10.1.2.457.jar
byg-1.3.6.jar
BetterPokeBroadcaster-Forge-1.2.0-1.16.5.jar
Quark-r2.4-322.jar
DungeonsArise-1.16.5-2.1.49-beta.jar
appliedenergistics2-8.4.7.jar
rechiseled-1.1.6-forge-mc1.16.jar
spark-1.9.1-forge.jar
AdditionalEnchantedMiner-1.16.5-16.1.15_938619e.jar
cloth-config-4.17.132-forge.jar
ForgePlaceholderAPI-Forge-2.0.4-1.16.5.jar
buildinggadgets-1.16.5-3.8.4-build.25+mc1.16.5.jar
jei-1.16.5-7.8.0.1013.jar
IronGenerators-1.6.0-final-1.16.x.jar
mcjtylib-1.16-5.1.8.jar
konkrete_forge_1.6.1_MC_1.16.2-1.16.5.jar
architectury-1.32.68.jar
additional_lights-1.16.4-2.1.3.jar
xnet-1.16-3.0.17.jar
supermartijn642corelib-1.1.18-forge-mc1.16.jar
ironfurnaces-1.16.5-2.7.7.jar
fusion-1.2.3-forge-mc1.16.jar
rftoolsbase-1.16-2.1.5.jar
backpacked-forge-1.16.5-2.1.13.jar
Waystones_1.16.5-7.6.4.jar
MekanismTools-1.16.5-10.1.2.457.jar
movingelevators-1.4.10-forge-mc1.16.jar
SuperTools-1.2_1.16.5.jar
ae2wtlib-0.3.3-1.16.5.jar
OreExcavation-1.8.157.jar
ironchest-1.16.5-11.2.21.jar
Chunky-1.2.123.jar
supermartijn642configlib-1.1.8-forge-mc1.16.jar
collective-1.16.5-5.49.jar
inzheFoPCore-v.1.2.0.jar
InvMove-1.16-0.8.2-Forge.jar
ferritecore-2.1.1-forge.jar
AutoRegLib-1.6-49.jar
supertools-1.16.5-4.5.jar
Disenchanting-forge-1.16.5-1.7.2.jar
PickUpNotifier-v1.2-1.16.3.jar
worldborder_1.16.5-2.4.jar
justzoom_forge_1.0.2-2_MC_1.16.5.jar

I have run some spark reports but to be honest, I don't understand a lot of it and it all points at just chunk generation.

I am using Chunky to pregenerate chunks as that has definitely been the most taxing on the server while users are playing. Server is exceptionally stable when doing anything but chunk generation. This is why I am on this crusade to resolve the server performance.