I beat YouTube slowdown

private fun createCronet(context: Context): CronetEngine { return CronetEngine.Builder(context) .enableHttp2(true) .enableQuic(true) .enableBrotli(true) .build() }

After connecting the library as an engine for Ktor Client (I used experimental implementation from github) the download speed has increased noticeably.

Summary

I managed to increase the average video download speed in 1080p до 7 мегабит on home Internet from MTS and до 12 мегабит on mobile Internet from Tele2.
If you need to download a video in the current slowdown conditions, you can always use my loader from RuStore.