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opencv 3.4.0 yolo implementation optimization

Dear all;

I am using yolo on a highly constrained system where GPU does not exist. So I have to live with CPU.

The first step that I have done was to implement darknet using pjreddie repository

Then I did the same thing with AlexeyAB repo

With the mentioned, the best FPS that I can get was 0.1.

Then I tried opencv implementation which is better optimized for CPU. With that I get 0.3 FPS.

The question is that is it possible to achieve higher FPS by using NNPACK, ARM_NEON (if using ARM) or any other optimization method in OPENCV implementation of darknet.