[HELP] Repeatability issue of results in multi-threaded environment in 2021 version

[MachineLeaningJoeZhan]

Version
2021.2.0-1877-176bdf51370

Platform
win64

Device
iGPU

Infer model
input: 60 * 60 pixel images
output: 20 probabilities
infer: async-infer

Detailed bug scenarios
I am a software developer. I build a AI Infer program with openvino2021. But recently , I found that when simultaneously starting 5 threads for parallel inference, there may be occasional issues where the same image input has different output results. I can confirm that this is a multi-threaded issue; Because this issue has never occurred during single threaded operation. And it can be fixed when I update the openvino version from 2021 to 2023LTS.
I wonder if there are some known multthreads_problem in openvino2021? Can you provide the solvetion and commit messages for me? Thank You!