[wux]

I'm curious what your results would be with the stock Terminal. Do you have the settings that others have talked about under "Security > Privacy > Developer Tools" with Terminal.app listed? If so, and the results are better with Terminal, then it'd be interesting to see if the issue is fixed when you add iTerm2 to the list of exempted apps as well.

[unown]

I have tried what you suggested. Granting "Developer Tools" access definitely FIXED THIS ISSUE for the specific application.

Here is the new result (I only run once for each case):

    ╒══════════╤═════════════╤═══════════════════════════╕
    │          │             │ +"Developer Tools" access │
    ╞══════════╪═════════════╪═══════════════════════════╡
    │ terminal │ 1.448/0.004 │ 0.016/0.004               │
    ├──────────┼─────────────┼───────────────────────────┤
    │ iTerm2   │ 1.240/0.006 │ 0.024/0.007               │
    ╘══════════╧═════════════╧═══════════════════════════╛

`1.448/0.004` means the first time it is `1.448 total`, and the second time it is `0.004 total`.

(It seems I have "good" VPN/internet connection condition at this time)

[airstrike]

Upvoted for ASCII table alone