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Game Programming using Qt 5 Beginner's Guide - Second Edition by Lorenz Haas, Witold Wysota, Pavel Strakhov

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Optimization

When adding many items to a scene or using items with complex paint() functions, the performance of your application may decrease. While default optimizations of Graphics View are suitable for most cases, you may need to tweak them to achieve better performance. Let's now take a look at some of the optimizations we can perform to speed up the scene.

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