So my little brother's birthday is on April 10th, and I thought I'd make him a modpack or two along with the other things I'm getting him. They were working fine yesterday, but today, they've done nothing but freeze as soon as the red Mojang screen finishes loading. My personal modpack is more heavily modded than both of the ones I'm making for him and my laptop can load it fine, so I'm thinking it's an issue with one or more of the mods themselves. I made him 2 packs: one for exploring and survival mode, and the other for building/automation/creative mode. Here's a list of the mods in both:
Explorer Pack
Snow! Real Magic! by Snownee_
Kiwi by Snownee_
AI Improvements by QueenOfMissiles
AutoRegLib by Vaskii
Bed Benefits by DarkhaxDev
Bookshelf by DarkhaxDev
Bountiful by ejektaflex
Caelus API (Forge) by TheIllusiveC4
Cat Jammies by Buuz135
Chunk-Pregenerator by Speiger
Clumps by Jaredlll08
Collective by Serilum
Colytra (Forge) by TheIllusiveC4
Decorative Blocks by stohun
Dynamic Surroundings by OreCruncher
FastFurnace by Shadows_of_Fire
FastWorkbench by Shadows_of_Fire
FPS Reducer by bre2el
Friendly Fire by DarkhaxDev
Goblin Traders by MrCrayfish
Guard Villagers by almightytallestred
Inspirations by KnightMiner
Kotlin for Forge by thedarkcolour
Mantle by mDiyo
Optifine
Pane in the Glass by MongoTheElder
Performant by someaddon
Placebo by Shadows_of_Fire
Quark by Vazkii
Regrowth by MacTso
ShetiPhianCore by ShetiPhian
Shrines Structures by silverminer007
Shutup Experimental Settings! by Corgi_Taco
Smooth Boot (Forge) by UltimateBoomer
Straw Golem Reborn - Forge by CommodoreThrawn
Structure Expansion by Sunekaer
Supplementaries by MehVahdJukaar
Terraqueous by ShetiPhian
TexTweaks by UltimateBoomer
Tips by DarkhaxDev
Torch Slabs Mod by EndlesNights
Traverse Reforged by Noobanidus
Valhelsia Structures by ValhelsiaTeam
VanillaFix by Runemoro
Villager Names by Serilum
Voyage by Lykrast
Creator Pack
Snow! Real Magic! by Snownee_
Kiwi by Snownee_
AI Improvements by QueenOfMissiles
AutoRegLib by Vaskii
Cat Jammies by Buuz135
Chunk-Pregenerator by Speiger
Clumps by Jaredlll08
Create by simibubi
Decorative Blocks by stohun
Dynamic Surroundings by OreCruncher
FastFurnace by Shadows_of_Fire
FastWorkbench by Shadows_of_Fire
FPS Reducer by bre2el
Inspirations by KnightMiner
Mantle by mDiyo
Optifine
Pane in the Glass by MongoTheElder
Performant by someaddon
Placebo by Shadows_of_Fire
Quark by Vazkii
ShetiPhianCore by ShetiPhian
Shutup Experimental Settings! by Corgi_Taco
Smooth Boot (Forge) by UltimateBoomer
Straw Golem Reborn - Forge by CommodoreThrawn
Supplementaries by MehVahdJukaar
Terraqueous by ShetiPhian
TexTweaks by UltimateBoomer
Torch Slabs Mod by EndlesNights
VanillaFix by Runemoro
There are so many FPS and related mods because my little brother's computer is a little slower than mine. That's also why I separated these into two mods (especially since Create is likely harder to run). I know for a fact that my brother wouldn't want to get rid of Create, Planes, Quark, Straw Golem, Torch Slabs, Pane in the Glass, Bed Benefits, Regrowth, Goblin Traders, Friendly Fire, Decorative Blocks, or Bountiful, so if they aren't the main problem, I'd like to try my best to keep them in the packs. My brother did mention that he wanted a couple more biomes and fruit trees (hence Terraqueous), so if any of the mods that I have right now that pertain to those things are the problem, could you recommend any mods that could replace them? (He only wants a few more biomes, so Biomes O' Plenty is out of the question.) If you need anything else from me to figure this out, please let me know. Thanks.