Achievements Optimizer is a lightweight performance mod that optimizes how item-based achievements and advancements are processed \u2014 reducing unnecessary inventory scans and improving overall tick efficiency.<\/p>\n
It doesn\u2019t change any gameplay mechanics or logic \u2014 only makes achievement checks faster and cleaner under the hood.<\/p>\n
\u2699\ufe0f** Key Optimizations**
\n– Early tick skipping \u2014 heavy slot calculations (empty\/occupied\/full) are skipped early, preventing extra work per event.
\n– Instant empty stack discard \u2014 with ignoreEmptyStacks enabled, empty stacks are removed immediately without scanning the entire inventory.
\n– Fast multi-item matching \u2014 single-pass inventory check using boolean[] flags with early exit. No allocations, noticeably faster on large inventories or long condition lists.
\n– Early slot filtering \u2014 slots.matches(full, empty, occupied) is evaluated first, avoiding deeper checks when slots don\u2019t match.
\n– Preserved fast path for single targets \u2014 when items.size() == 1, the comparison is done directly on the changed slot without a full inventory pass.<\/p>\n
\ud83d\ude80 **Result**<\/p>\n
Fewer redundant checks, less memory churn, and faster responses to inventory events.
\nParticularly beneficial for servers or modpacks with many players and complex advancement triggers.<\/p>\n
**From version 2.0.0 required Forge Config API Port (only for fabric version).
\n**
\nFeel free to write about all problems and suggestions on my github! Good luck!<\/p>\n","protected":false},"excerpt":{"rendered":"
Improved achievement performance<\/p>\n","protected":false},"featured_media":5091,"template":"","meta":{"_minecraft_slug":"achievements-optimizer","_minecraft_project_id":"SvXrP8rT","_minecraft_author":"bigenergy","_minecraft_license":"MIT","_minecraft_downloads":979252,"_minecraft_follows":169,"_minecraft_client_side":"optional","_minecraft_server_side":"required","_minecraft_storage_type":"zip","_minecraft_archive_name":"achievements-optimizer.zip","_minecraft_size_bytes":69614,"_minecraft_version_count":5,"_minecraft_updated_at":"2026-05-16T13:48:18.642553Z","_minecraft_date_created":"2023-12-26T06:12:35.087942Z","_minecraft_date_modified":"2026-01-10T19:02:36.804335Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/achievements-optimizer","_minecraft_icon_attachment_id":5091,"_minecraft_imported_at":"2026-05-31T13:40:38+00:00","_minecraft_import_hash":"b65c17ffbad433d1e61b8ee535c083e3","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[97,104,158,90,92],"mod_loader":[99,160],"minecraft_version":[53,56,36,60,93,94,62,37,40,41,38,82],"class_list":["post-5090","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-fabric","mod_category-forge","mod_category-neoforge","mod_category-optimization","mod_category-utility","mod_loader-fabric","mod_loader-neoforge","minecraft_version-1-18-2","minecraft_version-1-19-2","minecraft_version-1-20-1","minecraft_version-1-20-2","minecraft_version-1-20-3","minecraft_version-1-20-4","minecraft_version-1-21","minecraft_version-1-21-1","minecraft_version-1-21-10","minecraft_version-1-21-11","minecraft_version-1-21-4","minecraft_version-1-21-9"],"yoast_head":"\n