Details
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Bug
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Resolution: Duplicate
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P2: Important
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None
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5.5.1
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None
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OSX 10.11
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9cb92d106d9de92d25aa29423a59658f152f5791
Description
When dragging in OSX, mouse cursor movement is not smooth.
It is visible in all example applications where dragging is supported.
Just a drag without moving takes constantly up to 70% CPU time till drag is finished.
It makes it impossible to use drag'n drop quickly and precisely on OSX. Cursor jumps over screen.
Together with bug https://bugreports.qt.io/browse/QTBUG-48253 ( no retina support ) it is really not working as it should be.
No problem on Windows ( No matter how fast I move mouse when dragging in Windows it always ends in expected position, no jumps, just smooth mouse move. )
Attachments
Issue Links
- duplicates
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QTBUG-49204 [OS X] [Reg: Qt 5.4.1 -> Qt 5.5.0] Poor performance when dragging TreeWidgetItem
- Closed
- is duplicated by
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QTBUG-49830 Heavy lag when dragging and dropping objects
- Closed