{"action":"created","comment":{"url":"https://api.github.com/repos/code-dot-org/code-dot-org/pulls/comments/36924939","id":36924939,"diff_hunk":"@@ -82,6 +82,30 @@ var NetSimVizWire = module.exports = function (localNode, remoteNode) {\n   this.textPosY_ = 0;\n \n   /**\n+   * Flag that allows us to force a updating the text position; used","path":"apps/src/netsim/NetSimVizWire.js","position":4,"original_position":4,"commit_id":"e6d07ba329396e65139ce6d2828d85deb0d91be0","original_commit_id":"e6d07ba329396e65139ce6d2828d85deb0d91be0","user":{"login":"islemaster","id":1615761,"avatar_url":"https://avatars.githubusercontent.com/u/1615761?v=3","gravatar_id":"","url":"https://api.github.com/users/islemaster","html_url":"https://github.com/islemaster","followers_url":"https://api.github.com/users/islemaster/followers","following_url":"https://api.github.com/users/islemaster/following{/other_user}","gists_url":"https://api.github.com/users/islemaster/gists{/gist_id}","starred_url":"https://api.github.com/users/islemaster/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/islemaster/subscriptions","organizations_url":"https://api.github.com/users/islemaster/orgs","repos_url":"https://api.github.com/users/islemaster/repos","events_url":"https://api.github.com/users/islemaster/events{/privacy}","received_events_url":"https://api.github.com/users/islemaster/received_events","type":"User","site_admin":false},"body":"Done on code-dot-org/code-dot-org#3513","created_at":"2015-08-12T22:59:43Z","updated_at":"2015-08-12T22:59:43Z","html_url":"https://github.com/code-dot-org/code-dot-org/pull/3492#discussion_r36924939","pull_request_url":"https://api.github.com/repos/code-dot-org/code-dot-org/pulls/3492","_links":{"self":{"href":"https://api.github.com/repos/code-dot-org/code-dot-org/pulls/comments/36924939"},"html":{"href":"https://github.com/code-dot-org/code-dot-org/pull/3492#discussion_r36924939"},"pull_request":{"href":"https://api.github.com/repos/code-dot-org/code-dot-org/pulls/3492"}}},"pull_request":{"url":"https://api.github.com/repos/code-dot-org/code-dot-org/pulls/3492","id":42180822,"html_url":"https://github.com/code-dot-org/code-dot-org/pull/3492","diff_url":"https://github.com/code-dot-org/code-dot-org/pull/3492.diff","patch_url":"https://github.com/code-dot-org/code-dot-org/pull/3492.patch","issue_url":"https://api.github.com/repos/code-dot-org/code-dot-org/issues/3492","number":3492,"state":"closed","locked":false,"title":"NetSim: Viz performance cleanup","user":{"login":"islemaster","id":1615761,"avatar_url":"https://avatars.githubusercontent.com/u/1615761?v=3","gravatar_id":"","url":"https://api.github.com/users/islemaster","html_url":"https://github.com/islemaster","followers_url":"https://api.github.com/users/islemaster/followers","following_url":"https://api.github.com/users/islemaster/following{/other_user}","gists_url":"https://api.github.com/users/islemaster/gists{/gist_id}","starred_url":"https://api.github.com/users/islemaster/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/islemaster/subscriptions","organizations_url":"https://api.github.com/users/islemaster/orgs","repos_url":"https://api.github.com/users/islemaster/repos","events_url":"https://api.github.com/users/islemaster/events{/privacy}","received_events_url":"https://api.github.com/users/islemaster/received_events","type":"User","site_admin":false},"body":"1. For now, disable the background layer in the visualization.  Whether it's _causing_ performance issues or not, it's one of the more obvious symptoms of performance issues when it gets choppy and slow.  We're sad to see the floaty network go, but if it helps everything run smoother then it's worth it.\r\n2. Make sure nodes in the hidden background layer aren't running animation tweens.\r\n3. For nodes that are running tweens, only update the SVG element's `transform` attribute when it has actually changed.\r\n4. 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