ECN capability: off
Turns off Explicit Congestion Notification.
Applying it needs Nexus Pro. Every plan can read it here and undo it in Restore Center. Compare plans
What it changes
ECN capability: Disabled
Before anything is written, the review screen shows this setting's current value on your PC next to the new one.
Why it helps
Avoids rare problems with routers that mishandle ECN.
Trade-offs
Loses ECN's congestion signalling where it works.
Evidence
Limited evidence means: popular, but gains are rarely measurable. Expected impact is small (1 of 3): how much it can matter when this is actually the bottleneck on your PC, not a promised gain.
Gains from this tweak are rarely measurable on modern Windows, so it is never recommended or applied in bulk. If you try it, measure before and after with the Benchmark and keep it only if it helps.
Is it in a pack?
No. Packs never include tweaks with Limited evidence.
How to undo
Switch the tweak off in Nexus, or open Restore Center and restore this change (or choose Undo last change). Nexus writes back the original value it recorded before applying, not a generic default, then reads it back to confirm.
More in Latency
- Disable Nagle & delayed ACK (TCP)Sets TcpAckFrequency=1 and TCPNoDelay=1 on your active network adapter.SafePerformance
- Turn off network throttlingSets NetworkThrottlingIndex to off for the multimedia scheduler.SafePerformance
- Remove the QoS bandwidth limit policySets the QoS Packet Scheduler's reservable bandwidth policy to 0%.SafePerformance
- Receive Segment Coalescing: offStops the network stack merging received packets.CautionPerformance