Sets FastSendDatagramThreshold = 1500 under AFD (the kernel sockets driver). UDP datagrams at or below this size take a lower-overhead fast path through the stack, trimming per-packet latency for chatty UDP traffic (many games, voice). Reboot required; reversible.
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://learn.microsoft.com/en-us/windows-hardware/drivers/network/