{"action":"created","issue":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/11416","repository_url":"https://api.github.com/repos/MarlinFirmware/Marlin","labels_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/11416/labels{/name}","comments_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/11416/comments","events_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/11416/events","html_url":"https://github.com/MarlinFirmware/Marlin/issues/11416","id":345999422,"node_id":"MDU6SXNzdWUzNDU5OTk0MjI=","number":11416,"title":"Bug in 1.1.9 : Slowdown on small segments (SD or USB)","user":{"login":"houseofbugs","id":25088191,"node_id":"MDQ6VXNlcjI1MDg4MTkx","avatar_url":"https://avatars0.githubusercontent.com/u/25088191?v=4","gravatar_id":"","url":"https://api.github.com/users/houseofbugs","html_url":"https://github.com/houseofbugs","followers_url":"https://api.github.com/users/houseofbugs/followers","following_url":"https://api.github.com/users/houseofbugs/following{/other_user}","gists_url":"https://api.github.com/users/houseofbugs/gists{/gist_id}","starred_url":"https://api.github.com/users/houseofbugs/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/houseofbugs/subscriptions","organizations_url":"https://api.github.com/users/houseofbugs/orgs","repos_url":"https://api.github.com/users/houseofbugs/repos","events_url":"https://api.github.com/users/houseofbugs/events{/privacy}","received_events_url":"https://api.github.com/users/houseofbugs/received_events","type":"User","site_admin":false},"labels":[{"id":91739409,"node_id":"MDU6TGFiZWw5MTczOTQwOQ==","url":"https://api.github.com/repos/MarlinFirmware/Marlin/labels/Bug:%20Potential%20?","name":"Bug: Potential ?","color":"f9d0c4","default":false},{"id":855096300,"node_id":"MDU6TGFiZWw4NTUwOTYzMDA=","url":"https://api.github.com/repos/MarlinFirmware/Marlin/labels/C:%20Motion","name":"C: Motion","color":"006b75","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":31,"created_at":"2018-07-31T01:19:16Z","updated_at":"2018-08-30T19:13:46Z","closed_at":null,"author_association":"NONE","body":"I have the latest (as of 8:15PM CST 7/30/18) 1.1.x bugfix running on a few machines. Both have bilinear leveling enabled. Some machines are running the 1284p chip and others are running the 2560.\r\n\r\nI am going to run a test and disable the new junction deviation feature and see if the issue persists but it is doing random pauses over SD and USB printing. Here is a snippet of the terminal output when it happens:\r\n\r\n```\r\nSend: N3543 G1 X96.976 Y110.644 F7200*74\r\nRecv: ok\r\nSend: N3544 G1 E3.0000 F3000*3\r\nRecv: ok\r\nSend: N3545 G1 X97.067 Y110.734 E0.0086 F720*7\r\nRecv: echo:busy: processing\r\nRecv: echo:busy: processing\r\nRecv: echo:busy: processing\r\nRecv: echo:busy: processing\r\nRecv: ok\r\nSend: N3546 M105*19\r\nRecv: ok T:215.05 /215.00 B:50.43 /50.00 @:44 B@:0\r\nSend: N3547 G1 X96.976 Y110.644 E-3.0000 F128*37\r\nRecv: ok\r\nSend: N3548 G1 X105.980 Y114.556 F7200*119\r\nRecv: ok\r\n```\r\nIt shows busy: processing when this happens but the print continues after a few seconds. I am running a modified version of the bugfix (my Unified branch) but it did it as well on my Tornado with the regular bugfix branch as well. \r\n\r\nI am going to be digging into this more over the next few days and was wondering if anyone else is seeing the same issue with the latest bugfix version.\r\n\r\nThis Gcode does it at the front of the benchy right before it does the infill: https://content.timothyhoogland.com/files/ShareXUpload/3DBenchy.gcode\r\n\r\nI will be disabling the new junction deviation and testing with that disabled and the new SCurve Acceleration enabled and disabled but my Ender2 with the 1284P is doing it with the SCurve disabled.\r\n\r\nAlso going to see if it does it with Cura as I am only using S3D at the moment."},"comment":{"url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/comments/417434689","html_url":"https://github.com/MarlinFirmware/Marlin/issues/11416#issuecomment-417434689","issue_url":"https://api.github.com/repos/MarlinFirmware/Marlin/issues/11416","id":417434689,"node_id":"MDEyOklzc3VlQ29tbWVudDQxNzQzNDY4OQ==","user":{"login":"houseofbugs","id":25088191,"node_id":"MDQ6VXNlcjI1MDg4MTkx","avatar_url":"https://avatars0.githubusercontent.com/u/25088191?v=4","gravatar_id":"","url":"https://api.github.com/users/houseofbugs","html_url":"https://github.com/houseofbugs","followers_url":"https://api.github.com/users/houseofbugs/followers","following_url":"https://api.github.com/users/houseofbugs/following{/other_user}","gists_url":"https://api.github.com/users/houseofbugs/gists{/gist_id}","starred_url":"https://api.github.com/users/houseofbugs/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/houseofbugs/subscriptions","organizations_url":"https://api.github.com/users/houseofbugs/orgs","repos_url":"https://api.github.com/users/houseofbugs/repos","events_url":"https://api.github.com/users/houseofbugs/events{/privacy}","received_events_url":"https://api.github.com/users/houseofbugs/received_events","type":"User","site_admin":false},"created_at":"2018-08-30T19:13:46Z","updated_at":"2018-08-30T19:13:46Z","author_association":"NONE","body":"Maybe this is an S3D issue? I'll start poking around. I ran G1 E-3.0000 F2 and it took about 12 seconds to complete."}}
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