Favors low latency under load by restricting receive-window auto-tuning (smaller buffers = less queueing delay) with ECN enabled and CUBIC. This can reduce maximum download speed on high-bandwidth links. NOTE: the real bufferbloat fix is SQM/fq_codel on your router; this only tunes the PC side. Revert resets TCP settings to Windows defaults. Reboot recommended.
MaxTweaks applies this tweak with one click and snapshots your original setting first, so you can revert it cleanly at any time. A System Restore point is offered before batch changes, and every tweak links to its official source.
Get MaxTweaksOfficial documentation: https://www.bufferbloat.net/projects/