OptiCool

OptiCool

OptiCool is a modpack related to optimization/fix improvements and features from OptiFine!

by ShrikerChestTrees
5.4K Downloads
0 Followers
fabricquiltneoforgeMC 1.21.5optimization

Screenshots

OptiCool: Old Banner
OptiCool: Banner
OptiCool: Banner - Black Version
OptiCool: Dynamic Light
OptiCool: Plus Edition #1
OptiCool #1

About this Modpack

English

OptiCool will be updated to 1.21.6 but before that I plan to release for 1.21.5!
(modpack name may be missing in F3)

Русский

OptiCool обновиться до 1.21.6, но перед этим, я планирую выпустить релиз для 1.21.5!
(возможно будет отсутствовать название модпака в F3)

English

OptiCool is a modpack that has improved optimization and support OptiFine features!

Optimization Comparison

Let's compare OptiCool 1.0 B1 pre1 with OptiFabric and OptiFine (1.21.4)!

Menu in 1.21.4 OptiFine
2025-05-21_17 12 31
2025-05-21_17 12 37
2025-05-21_17 12 43

Menu in OptiFabric (Modpack)
2025-05-21_20 03 22
2025-05-21_20 04 09
2025-05-21_20 04 15

Menu in OptiCool 1.0 B1 pre1
2025-05-21_20 28 45
2025-05-21_20 29 05
2025-05-21_20 29 13
2025-05-21_20 29 18

As you've already noticed for yourself that OptiCool is inspired by old OptiFine parts...

Now let's get to the most interesting part - FPS Testing!

FPS with 1.21.4 OptiFine
2025-05-21_21 04 42
I had to put 12 chunks to have an accurate result.

FPS with OptiFabric (Modpack)
2025-05-21_20 50 14

FPS with OptiCool 1.0 B1 pre1
2025-05-21_21 35 59
Why this result? Most likely because OptiCool uses optimized settings options that try to give the look of Minecraft on Fancy graphics although it's Fast and fixes the big lag issues from particles.

Additional

In new versions there will be updates or add mods for optimization / mods for OptiFine features.

There are 8 editions (2 editions support both Fabric and Quilt) of OptiCool:

  1. Default Edition (The name of the edition is hidden and looks like this: OptiCool) - basic OptiCool.
  2. Plus Edition - improved version of OptiCool where useful mods are added!
  3. NeoForge Edition - OptiCool port on NeoForge.
  4. NeoForge Plus Edition - OptiCool: Plus Edition port on NeoForge.

Non-updatable:

  1. OptiCool Beta 1.7.3 - OptiCool for Beta 1.7.3 (Babric) Reason: Not supporting json files.
  2. OptiCool Beta 1.7.3: Plus Edition - OptiCool: Plus Edition for Beta 1.7.3 (Babric) Reason: Not supporting json files.
Spoiler

New editions may be completely different and you may not like it.

If you have any problems send it to OptiCool Issues

Русский

OptiCool - модпак с улучшенной оптимизацией и поддержкой возможностей OptiFine!

Сравнение Оптимизации

Давайте сравним OptiCool 1.0 B1 pre1 с OptiFabric и OptiFine (1.21.4)!

Меню в 1.21.4 OptiFine
2025-05-21_17 12 31
2025-05-21_17 12 37
2025-05-21_17 12 43

Меню в OptiFabric (Модпак)
2025-05-21_20 03 22
2025-05-21_20 04 09
2025-05-21_20 04 15

Меню в OptiCool 1.0 B1 pre1
2025-05-21_20 28 45
2025-05-21_20 29 05
2025-05-21_20 29 13
2025-05-21_20 29 18

Как вы уже и сами заметили, что OptiCool вдохновляется старыми деталями OptiFine...

Теперь перейдём к самому интересному - Тестирование FPS!

FPS с 1.21.4 OptiFine
2025-05-21_21 04 42
Пришлось поставить 12 чанков, чтобы был результат точен.

FPS с OptiFabric (Модпак)
2025-05-21_20 50 14

FPS с OptiCool 1.0 B1 pre1
2025-05-21_21 35 59
Почему такой результат? Скорее всего из-за того, что OptiCool использует оптимизированные варианты настроек, которые придают вид Minecraft на Детальном графике, хотя это Быстрая, а также исправляет большие проблемы с лагами от частиц.

Дополнительно

В новых версиях будут обновления или добавления модов для оптимизации / модов для возможностей OptiFine.

Имеются 8 изданий (2 издания поддерживают и Fabric, и Quilt) OptiCool:

  1. Default Edition (Название издания скрыто и это выглядит вот так: OptiCool) - обычный OptiCool.
  2. Plus Edition - улучшенная версия OptiCool где добавлены полезные моды!
  3. NeoForge Edition - порт OptiCool на NeoForge.
  4. NeoForge Plus Edition - порт OptiCool: Plus Edition на NeoForge.

Не обновляемые:

  1. OptiCool Beta 1.7.3 - OptiCool для Beta 1.7.3 (Babric) Причина: Не поддержка json файлов.
  2. OptiCool Beta 1.7.3: Plus Edition - OptiCool: Plus Edition для Beta 1.7.3 (Babric) Причина: Не поддержка json файлов.
Спойлер

Новые издания могут быть совершенно другими и вам это может не понравиться.

Если имеете какие-то проблемы, то отправляйте это в OptiCool Issues

Available Versions

OptiCool 1.0 B1release
MC 1.21.5fabric793 downloads
June 23, 2025
OptiCool Quilt 1.0 B1release
MC 1.21.5quilt32 downloads
June 23, 2025
OptiCool: NeoForge Edition 1.0 B1release
MC 1.21.5neoforge72 downloads
June 23, 2025
OptiCool: Plus Edition 1.0 A5release
MC 1.21fabric788 downloads
July 24, 2024
OptiCool 1.0 A5 Oldrelease
MC 1.21fabric113 downloads
July 24, 2024

How to Set Up a OptiCool Server

1

Order Server

Choose at least 4 GB RAM (6 GB recommended for OptiCool). Based on player count: per 5 players.

2

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "OptiCool" and click "Install". The fabric loader and Minecraft 1.21.5 are configured automatically.

3

Start Server & Play

Start the server – all mods are loaded automatically. Share the server IP with friends and play together!

Frequently Asked Questions

OptiCool server crashes or won't start – what to do?

Most common causes: insufficient RAM or wrong fabric loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 6 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.

How much RAM does a OptiCool server really need?

Minimum 4 GB, recommended 6 GB for stable performance. per 5 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €8/month).

Can I add custom mods to OptiCool without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.21.5). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.

OptiCool server lagging – performance tips

1) Increase RAM to 6 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.

Rent OptiCool Server

Start your own server with automatic modpack installation.

Recommended RAM:
6 GB(min. 4 GB)
From 8.00 / month
Create Server Now
1-Click Modpack Install
NVMe SSD Storage
DDoS Protection included
Automatic Backups

Details

License
Apache License 2.0
Server-side
Optional
Client-side
Required

Supported Versions

1.21.51.21b1.7.3

Start your OptiCool Server now

From €8.00/month with 6 GB RAM for the best performance.

Configure Server →