{"action":"created","issue":{"url":"https://api.github.com/repos/alexrj/Slic3r/issues/3868","repository_url":"https://api.github.com/repos/alexrj/Slic3r","labels_url":"https://api.github.com/repos/alexrj/Slic3r/issues/3868/labels{/name}","comments_url":"https://api.github.com/repos/alexrj/Slic3r/issues/3868/comments","events_url":"https://api.github.com/repos/alexrj/Slic3r/issues/3868/events","html_url":"https://github.com/alexrj/Slic3r/issues/3868","id":220309885,"number":3868,"title":"Extreme sudden (temporary) slowdown halfway through print","user":{"login":"Hertog99","id":6561058,"avatar_url":"https://avatars1.githubusercontent.com/u/6561058?v=3","gravatar_id":"","url":"https://api.github.com/users/Hertog99","html_url":"https://github.com/Hertog99","followers_url":"https://api.github.com/users/Hertog99/followers","following_url":"https://api.github.com/users/Hertog99/following{/other_user}","gists_url":"https://api.github.com/users/Hertog99/gists{/gist_id}","starred_url":"https://api.github.com/users/Hertog99/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Hertog99/subscriptions","organizations_url":"https://api.github.com/users/Hertog99/orgs","repos_url":"https://api.github.com/users/Hertog99/repos","events_url":"https://api.github.com/users/Hertog99/events{/privacy}","received_events_url":"https://api.github.com/users/Hertog99/received_events","type":"User","site_admin":false},"labels":[{"id":378025797,"url":"https://api.github.com/repos/alexrj/Slic3r/labels/Autospeed","name":"Autospeed","color":"0052cc","default":false}],"state":"open","locked":false,"assignee":{"login":"alexrj","id":594957,"avatar_url":"https://avatars1.githubusercontent.com/u/594957?v=3","gravatar_id":"","url":"https://api.github.com/users/alexrj","html_url":"https://github.com/alexrj","followers_url":"https://api.github.com/users/alexrj/followers","following_url":"https://api.github.com/users/alexrj/following{/other_user}","gists_url":"https://api.github.com/users/alexrj/gists{/gist_id}","starred_url":"https://api.github.com/users/alexrj/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/alexrj/subscriptions","organizations_url":"https://api.github.com/users/alexrj/orgs","repos_url":"https://api.github.com/users/alexrj/repos","events_url":"https://api.github.com/users/alexrj/events{/privacy}","received_events_url":"https://api.github.com/users/alexrj/received_events","type":"User","site_admin":false},"assignees":[{"login":"alexrj","id":594957,"avatar_url":"https://avatars1.githubusercontent.com/u/594957?v=3","gravatar_id":"","url":"https://api.github.com/users/alexrj","html_url":"https://github.com/alexrj","followers_url":"https://api.github.com/users/alexrj/followers","following_url":"https://api.github.com/users/alexrj/following{/other_user}","gists_url":"https://api.github.com/users/alexrj/gists{/gist_id}","starred_url":"https://api.github.com/users/alexrj/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/alexrj/subscriptions","organizations_url":"https://api.github.com/users/alexrj/orgs","repos_url":"https://api.github.com/users/alexrj/repos","events_url":"https://api.github.com/users/alexrj/events{/privacy}","received_events_url":"https://api.github.com/users/alexrj/received_events","type":"User","site_admin":false}],"milestone":null,"comments":4,"created_at":"2017-04-07T19:42:22Z","updated_at":"2017-04-07T20:35:23Z","closed_at":null,"body":"### Version\r\n1.2.9-945-gab278f03 (ab278f03e17873dc423e011b49da4a480fb806fd)\r\n\r\n### Operating system type + version\r\nUbuntu 16.10\r\n### Behavior\r\nHalfway through a print with  all speed settings set to 'auto' and Max print speed set to 60, the printer suddenly starts to run very slow for infill and perimeters, travels are still fast. The slowdowns last for a couple of layers, and after that, return back to normal. In the attached STL file, the problems start at layer 56 and are over by layer 63. Speeds go as low as 0.8 mm/sec \r\n\r\nThe speeds can be seen in http://gcode.ws, so seem printer unrelated.\r\n* _Steps needed to reproduce the problem_\r\nSee STL file at layer 56 to 63\r\n* _Expected Results_\r\nSomewhat faster prints between layer 56 and 63\r\n\r\nEither this is functionality that I just don't understand yet, or it is the result of having everything on auto, and have the system default to some very low speeds.\r\n\r\n#### STL/Config (.ZIP) where problem occurs\r\nAttached are copy of config.ini and the gcode as generated by slic3r.\r\n[speed-problem-slic3r.zip](https://github.com/alexrj/Slic3r/files/906676/speed-problem-slic3r.zip)\r\n[STL](https://github.com/alexrj/Slic3r/files/906758/Y_Axis_motor_mount_v2.STL.zip)\r\n"},"comment":{"url":"https://api.github.com/repos/alexrj/Slic3r/issues/comments/292644976","html_url":"https://github.com/alexrj/Slic3r/issues/3868#issuecomment-292644976","issue_url":"https://api.github.com/repos/alexrj/Slic3r/issues/3868","id":292644976,"user":{"login":"lordofhyphens","id":31754,"avatar_url":"https://avatars3.githubusercontent.com/u/31754?v=3","gravatar_id":"","url":"https://api.github.com/users/lordofhyphens","html_url":"https://github.com/lordofhyphens","followers_url":"https://api.github.com/users/lordofhyphens/followers","following_url":"https://api.github.com/users/lordofhyphens/following{/other_user}","gists_url":"https://api.github.com/users/lordofhyphens/gists{/gist_id}","starred_url":"https://api.github.com/users/lordofhyphens/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lordofhyphens/subscriptions","organizations_url":"https://api.github.com/users/lordofhyphens/orgs","repos_url":"https://api.github.com/users/lordofhyphens/repos","events_url":"https://api.github.com/users/lordofhyphens/events{/privacy}","received_events_url":"https://api.github.com/users/lordofhyphens/received_events","type":"User","site_admin":false},"created_at":"2017-04-07T20:35:23Z","updated_at":"2017-04-07T20:35:23Z","body":"Yeah, there's probably an area in that part that is being extruded slowly and that rippled out the rest of the layers (autospeed is about maintaining pressure).\r\n\r\nThank you for the test case."}}
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