{"action":"created","issue":{"url":"https://api.github.com/repos/angular/material/issues/7377","repository_url":"https://api.github.com/repos/angular/material","labels_url":"https://api.github.com/repos/angular/material/issues/7377/labels{/name}","comments_url":"https://api.github.com/repos/angular/material/issues/7377/comments","events_url":"https://api.github.com/repos/angular/material/issues/7377/events","html_url":"https://github.com/angular/material/issues/7377","id":137926570,"number":7377,"title":"IE11 Performance in 1.0.6","user":{"login":"char0n","id":193286,"avatar_url":"https://avatars.githubusercontent.com/u/193286?v=3","gravatar_id":"","url":"https://api.github.com/users/char0n","html_url":"https://github.com/char0n","followers_url":"https://api.github.com/users/char0n/followers","following_url":"https://api.github.com/users/char0n/following{/other_user}","gists_url":"https://api.github.com/users/char0n/gists{/gist_id}","starred_url":"https://api.github.com/users/char0n/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/char0n/subscriptions","organizations_url":"https://api.github.com/users/char0n/orgs","repos_url":"https://api.github.com/users/char0n/repos","events_url":"https://api.github.com/users/char0n/events{/privacy}","received_events_url":"https://api.github.com/users/char0n/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/angular/material/labels/browser:%20IE","name":"browser: IE","color":"fbca04"},{"url":"https://api.github.com/repos/angular/material/labels/type:%20performance","name":"type: performance","color":"207de5"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":8,"created_at":"2016-03-02T16:41:08Z","updated_at":"2016-03-08T11:40:34Z","closed_at":null,"body":"There has been significant performance degradation in release 1.0.6 for IE 11. In 1.0.5 and IE 11 performance was not very good but it was still acceptable; but, running on 1.0.6 makes project in angular-material unusable. UI freezes and becomes irresponsible. Can you imagine some reason why there is such a dramatic performance decrease in patch version ?\r\n\r\nIs there somebody else that have experienced something similar ?"},"comment":{"url":"https://api.github.com/repos/angular/material/issues/comments/193744413","html_url":"https://github.com/angular/material/issues/7377#issuecomment-193744413","issue_url":"https://api.github.com/repos/angular/material/issues/7377","id":193744413,"user":{"login":"david-gang","id":1292882,"avatar_url":"https://avatars.githubusercontent.com/u/1292882?v=3","gravatar_id":"","url":"https://api.github.com/users/david-gang","html_url":"https://github.com/david-gang","followers_url":"https://api.github.com/users/david-gang/followers","following_url":"https://api.github.com/users/david-gang/following{/other_user}","gists_url":"https://api.github.com/users/david-gang/gists{/gist_id}","starred_url":"https://api.github.com/users/david-gang/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/david-gang/subscriptions","organizations_url":"https://api.github.com/users/david-gang/orgs","repos_url":"https://api.github.com/users/david-gang/repos","events_url":"https://api.github.com/users/david-gang/events{/privacy}","received_events_url":"https://api.github.com/users/david-gang/received_events","type":"User","site_admin":false},"created_at":"2016-03-08T11:40:34Z","updated_at":"2016-03-08T11:40:34Z","body":"I found out something interesting:\r\n\r\nWhen we disable the css theming by setting the constant \r\n\r\n```javascript\r\nmodule.constant('$MD_THEME_CSS', '');\r\n```\r\n\r\nthe performance of ie gets better.\r\n\r\nI am not sure what the reason is. Maybe it is the number of selectors. We don't know what the big O of ie is :-)\r\n\r\nIt would be interesting to hear if you also see this in your web apps.\r\n\r\n\r\n"}}