{"action":"opened","issue":{"url":"https://api.github.com/repos/go-gl/example/issues/67","repository_url":"https://api.github.com/repos/go-gl/example","labels_url":"https://api.github.com/repos/go-gl/example/issues/67/labels{/name}","comments_url":"https://api.github.com/repos/go-gl/example/issues/67/comments","events_url":"https://api.github.com/repos/go-gl/example/issues/67/events","html_url":"https://github.com/go-gl/example/issues/67","id":319835129,"number":67,"title":"frame rate drops proportionally to number of process instances ","user":{"login":"Shnifer","id":35039664,"avatar_url":"https://avatars3.githubusercontent.com/u/35039664?v=4","gravatar_id":"","url":"https://api.github.com/users/Shnifer","html_url":"https://github.com/Shnifer","followers_url":"https://api.github.com/users/Shnifer/followers","following_url":"https://api.github.com/users/Shnifer/following{/other_user}","gists_url":"https://api.github.com/users/Shnifer/gists{/gist_id}","starred_url":"https://api.github.com/users/Shnifer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Shnifer/subscriptions","organizations_url":"https://api.github.com/users/Shnifer/orgs","repos_url":"https://api.github.com/users/Shnifer/repos","events_url":"https://api.github.com/users/Shnifer/events{/privacy}","received_events_url":"https://api.github.com/users/Shnifer/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-05-03T08:50:24Z","updated_at":"2018-05-03T08:50:24Z","closed_at":null,"author_association":"NONE","body":"Hello!\r\nI added SwapInterval(1) to example/gl21-cube and it gives me a nice 60 fps. But if i run a second cube.exe at the same time they both show only 60/2=30 fps. Third instance drops fps to 60/3 = 20 and so on.\r\nCPU and memory usage is under 30%.\r\nWhat is the reason, and how can i fix it?\r\n\r\n(my system: AMD Athlon II X4, Win 7, Radeon HD 7800 series)"}}
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