Thank you for you reply. Some pieces of advice you listed here were really helpful. I can't say exactly after what settings option change results appeared so I'll give credit to all of them.
After applying all of the settings (except undervolt because it wasn't really needed) POWER blinking sign...
Recently I've encountered an issue with my laptop: annoying coil whine just suddenly appeared out of nowhere, and a day or two after that an insane power throttling started happening. Absolutely positive that the issue is not connected to audio speakers and is not thermal throttling. The only...