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Old 9th August 2018, 18:46   #11  |  Link
Myrsloik
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This is based on my observation when developing VS but it'd surprise me greatly if AVS isn't guilty as well.

At some point the frame requests end up out of order and then the source filter has to seek. This is very slow in most of them. I ended up adding logic and a flag to indicate which filters really benefit from linear access and extra logic to make requests in order more of the time. It resulted in significant speedups.

I don't understand how Avs+ multithreading works but it's most likely close to the truth...
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