Issue after converting RetinaFace model to openVino

I have tried to convert the RetinaFace(R-50 model) to openVino but the accuracy and no. of detection is getting less. I am getting FPS of 7 on GPU and 0.01 on CPU with original R-50 model and no. of detection is 427 and precision - 0.721 recall 0.744. But after conversion FPS on CPU increased but no of detection decreased to 12.

Please help if you have tried.