train not Stably maintain high usage

[LiaoRiYang]

when i train my dataset, GPU not Stably maintain high usage
(it sometimes 10% , and sonetimes 70%,The numbers will go up and down)
batch size 8 (because RTX3060 only has 12 GPU RAM)
my num work is set 32, because i have 32 core CPU
threads is set 1 , because only has one GPU
Do any parameters still need to be changed?

[LSH9832]

just set num_workers=4. Too large number of num_workers may cause the opposite effect.