Fixed update, configurable progress rate as a plugin

progress_rate.py

import functools
import time
from threading import Lock

from yt_dlp.downloader.common import FileDownloader


# Configure update delay here, in nanoseconds
UPDATE_DELAY_NS = 1_000_000_000

_next_update = time.monotonic_ns()
_lock = Lock()
_old_report_progress = FileDownloader.report_progress


@functools.wraps(FileDownloader.report_progress)
def report_progress(self, s):
    global _next_update

    current_time = time.monotonic_ns()
    with _lock:
        if current_time < _next_update and s['status'] != 'finished':
            return
        _next_update = current_time + UPDATE_DELAY_NS
    _old_report_progress(self, s)


FileDownloader.report_progress = report_progress