Weaker detections in deepstream-app

[chandana-21]

I ran inference on the same video using my yolov5l .pt weights using detect.py from yolov5 github repo and onnx weights in deepstream.

This is the detect.py video

detect_yolov5.MP4

This is the video in deepstream with config:

nms-iou-threshold=0.45
pre-cluster-threshold=0.25
topk=300

fp16_conf.mov

and this is the video with config:

nms-iou-threshold=0.65
pre-cluster-threshold=0.001
topk=300

fp16_conf_001.mov

The detections are missing for most of the second half of the video in deepstream, what could be causing this and how can i solve it?