Performance Improvements

View a comprehensive history of all the performance optimisations in Construct 3 since the first release.

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Animations editor: improve editor responsiveness when selecting a large amount of frames at the same time
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Improve runtime startup performance for projects using thousands of events
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Improve editor performance adding instance variables with large number of instances
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Editor now built with Closure Compiler (produces smaller & faster loading scripts)
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Video: improve playback efficiency in worker mode
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Adjust frame scheduling to allow maximum possible time to run events/logic
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Switch to OptiPNG on export for smaller & faster PNG recompression
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Remote Preview: now uses compression to load faster, where supported (currently Chrome 80+)
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Optimise rendering large numbers of on-screen SVG Picture objects (now ~6x faster)
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Adjust spritesheeting algorithm to use fewer textures (reducing download size and potentially increasing runtime performance) without significantly affecting memory use
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Improve editor performance showing/closing dialogs in light & dark themes