Ultimately, it turned out that images speak louder than texts. I used screenshots tools that capture still images
https://www.pcmag.com/how-to/how-to-take-screenshots-in-windows-10
and screen recorders for the entire demonstration.
https://www.videoproc.com/download-record-video/best-screen-recorder.htm
The support team found a red icon on my anti-virus software which also indicated the over usage of CPU. Just a pretty simple issue, but we had gone a detour. I might have been given up reporting without the help of intuitive tools.
PS: Most of them have watermakers. So I just use them for personal use. If you want better results, a one-by-one text is needed. As for my personal experience, open source screen recorders perform better.
PPS: First time to share here. Hope this can help some insiders
