Osd object label always flickering on the screen in my custom yolo model

in DeepStream-Yolo project
deepstream-app -c deepstream_app_config.txt , in osd video, the object label always flickering,

How should it be adjusted to make the labels between each frame look smooth, rather than flickering?

the deepstream_app_config.txt is

[application]
enable-perf-measurement=1
perf-measurement-interval-sec=5

[tiled-display]
enable=1
rows=1
columns=2
width=1280
height=720
gpu-id=0
nvbuf-memory-type=0
square-seq-grid=1

[source0]
enable=1
type=3
uri=file:///tmp/card_video_files/00000000063000000.mp4
num-sources=1
gpu-id=0
drop-frame-interval=5
cudadec-memtype=0

[source1]
enable=1
type=3
uri=file:///tmp/card_video_files/00000000064000000.mp4
num-sources=1
gpu-id=0
drop-frame-interval=5
cudadec-memtype=0

[sink0]
enable=1
type=2
sync=0
gpu-id=0
nvbuf-memory-type=0

[osd]
enable=1
gpu-id=0
border-width=1
text-size=15
text-color=1;1;1;1;
text-bg-color=0.3;0.3;0.3;1
font=Serif
show-clock=0
clock-x-offset=800
clock-y-offset=820
clock-text-size=12
clock-color=1;0;0;0
nvbuf-memory-type=0

[streammux]
gpu-id=0
live-source=0
batch-size=2
batched-push-timeout=40000
width=2560
height=1440
enable-padding=0
nvbuf-memory-type=0

[primary-gie]
enable=1
gpu-id=0
gie-unique-id=1
nvbuf-memory-type=0
config-file=config_infer_primary_yoloV8.txt

[tests]
file-loop=0

Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU) GPU
• DeepStream Version7.0 in docker

update config_infer_primary_yoloV8.txt
interval=0
will ok

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