Performances issues (1 CPU core used, GPU idle) on huge images

[ExtReMLapin]

Hello,
It it an expected to see one CPU core being used only and it takes ages to run on one image ?

GPU is detected, VRAM is filled, yet only one CPU core is (mostly) being used

I'm using the code from the readme file, on a 6000x4000 image

[ExtReMLapin]

What is the expected minutia size ? Or the fingerprint size ?