{"action":"created","issue":{"url":"https://api.github.com/repos/godotengine/godot/issues/18481","repository_url":"https://api.github.com/repos/godotengine/godot","labels_url":"https://api.github.com/repos/godotengine/godot/issues/18481/labels{/name}","comments_url":"https://api.github.com/repos/godotengine/godot/issues/18481/comments","events_url":"https://api.github.com/repos/godotengine/godot/issues/18481/events","html_url":"https://github.com/godotengine/godot/issues/18481","id":318629823,"number":18481,"title":"Physics 2D performance on 3.1/master significantly lower than 3.0.2","user":{"login":"lekoder","id":1224527,"avatar_url":"https://avatars2.githubusercontent.com/u/1224527?v=4","gravatar_id":"","url":"https://api.github.com/users/lekoder","html_url":"https://github.com/lekoder","followers_url":"https://api.github.com/users/lekoder/followers","following_url":"https://api.github.com/users/lekoder/following{/other_user}","gists_url":"https://api.github.com/users/lekoder/gists{/gist_id}","starred_url":"https://api.github.com/users/lekoder/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lekoder/subscriptions","organizations_url":"https://api.github.com/users/lekoder/orgs","repos_url":"https://api.github.com/users/lekoder/repos","events_url":"https://api.github.com/users/lekoder/events{/privacy}","received_events_url":"https://api.github.com/users/lekoder/received_events","type":"User","site_admin":false},"labels":[{"id":73330064,"url":"https://api.github.com/repos/godotengine/godot/labels/bug","name":"bug","color":"ff2222","default":true},{"id":370471880,"url":"https://api.github.com/repos/godotengine/godot/labels/topic:physics","name":"topic:physics","color":"ffdd44","default":false}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":{"url":"https://api.github.com/repos/godotengine/godot/milestones/7","html_url":"https://github.com/godotengine/godot/milestone/7","labels_url":"https://api.github.com/repos/godotengine/godot/milestones/7/labels","id":2529217,"number":7,"title":"3.1","description":"","creator":{"login":"akien-mga","id":4701338,"avatar_url":"https://avatars0.githubusercontent.com/u/4701338?v=4","gravatar_id":"","url":"https://api.github.com/users/akien-mga","html_url":"https://github.com/akien-mga","followers_url":"https://api.github.com/users/akien-mga/followers","following_url":"https://api.github.com/users/akien-mga/following{/other_user}","gists_url":"https://api.github.com/users/akien-mga/gists{/gist_id}","starred_url":"https://api.github.com/users/akien-mga/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/akien-mga/subscriptions","organizations_url":"https://api.github.com/users/akien-mga/orgs","repos_url":"https://api.github.com/users/akien-mga/repos","events_url":"https://api.github.com/users/akien-mga/events{/privacy}","received_events_url":"https://api.github.com/users/akien-mga/received_events","type":"User","site_admin":false},"open_issues":986,"closed_issues":946,"state":"open","created_at":"2017-05-18T13:33:56Z","updated_at":"2018-04-28T13:53:21Z","due_on":null,"closed_at":null},"comments":0,"created_at":"2018-04-28T11:53:47Z","updated_at":"2018-04-28T13:53:21Z","closed_at":"2018-04-28T13:53:20Z","author_association":"NONE","body":"**Godot version:** 8d199a9b2 (3.1/master)\r\n**OS/device including version:** Win10\r\n**Issue description:**\r\nPhysics 2D performance in 8d199a9b2 (3.1/master) is significantly lower than 3.0.2. Test projects that runs at smooth 60FPS on 3.0.2 barely makes it to 5-6FPS in 3.1.\r\n\r\nExpected behaviour: similar performance as 3.0.2.\r\n\r\n![physics-2d-performance](https://user-images.githubusercontent.com/1224527/39396275-8fc367f2-4aeb-11e8-8baa-3a1404393c53.png)\r\n\r\n![physics-2d](https://thumbs.gfycat.com/DarkImperturbableAnnashummingbird-size_restricted.gif)\r\n\r\n**Steps to reproduce:**\r\nRun 2D physics with 1000 objects, observe FPS on 3.0.2 and 3.1.\r\n\r\n**Minimal reproduction project:**\r\n[physics-2d-performance.zip](https://github.com/godotengine/godot/files/1957672/physics-2d-performance.zip)\r\n"},"comment":{"url":"https://api.github.com/repos/godotengine/godot/issues/comments/385177544","html_url":"https://github.com/godotengine/godot/issues/18481#issuecomment-385177544","issue_url":"https://api.github.com/repos/godotengine/godot/issues/18481","id":385177544,"user":{"login":"lekoder","id":1224527,"avatar_url":"https://avatars2.githubusercontent.com/u/1224527?v=4","gravatar_id":"","url":"https://api.github.com/users/lekoder","html_url":"https://github.com/lekoder","followers_url":"https://api.github.com/users/lekoder/followers","following_url":"https://api.github.com/users/lekoder/following{/other_user}","gists_url":"https://api.github.com/users/lekoder/gists{/gist_id}","starred_url":"https://api.github.com/users/lekoder/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lekoder/subscriptions","organizations_url":"https://api.github.com/users/lekoder/orgs","repos_url":"https://api.github.com/users/lekoder/repos","events_url":"https://api.github.com/users/lekoder/events{/privacy}","received_events_url":"https://api.github.com/users/lekoder/received_events","type":"User","site_admin":false},"created_at":"2018-04-28T13:53:20Z","updated_at":"2018-04-28T13:53:20Z","author_association":"NONE","body":"This is build related and not an actual issue. I followed [Compiling for Windows](http://docs.godotengine.org/en/3.0/development/compiling/compiling_for_windows.html) and it lacks a crucial information of adding `target=release_debug` for tool build ([mentioned in introduction to buildsystem only](http://docs.godotengine.org/en/3.0/development/compiling/introduction_to_the_buildsystem.html)).\r\n\r\nI have re-built 8d199a9b2 with said target and it performs as expected."}}
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