Hi there,
Unfortunately, your request is a bit out of scope for our support, as you wrote a custom piece of software that uses the engine with the upgrade path spanning four point releases (5.3 - 5.7). I suggest that you try profiling your code with conventional profiling tools and perform an in-depth analysis of GPU timings that have changed between 5.3 and 5.7 by comparing each pass’s timing to the previous one. You should get a better sense of what might have changed then. If you can, then point out where your app is performing slowly, and we can try methods to optimize your performance. If you have any comments about this, please don’t hesitate to let me know, and I can try to help you further.
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