Network tweaks reduce artificial limits and improve how Windows sends packets.
Why it matters
Nagle's algorithm bundles small packets before sending — bad for online games where every millisecond counts. Disabling it lowers ping. Less noticeable for bulk downloads.
Available tweaks
| Tweak | Tier | Risk | Recommended | Description |
|---|---|---|---|---|
| Disable Nagle's algorithm | Free | Safe | Yes | Sends packets immediately — lower ping in online games. |
| Disable network throttling | Free | Safe | Yes | Lifts the multimedia network bandwidth limit. |
| Optimize TCP auto-tuning | Pro | Safe | Yes | Tunes TCP receive window for modern connections. |
| Release QoS reserved bandwidth | Pro | Safe | Yes | Frees the 20% bandwidth Windows reserves by default. |
| Increase max user ports | Pro | Safe | No | More ports and lower TIME_WAIT for busy connections. |
| Disable Teredo tunneling | Pro | Safe | No | Disables IPv6 Teredo adapter that can add latency. |
| Use Cloudflare DNS (1.1.1.1) | Pro | Advanced | No | Sets fast Cloudflare DNS on your active adapter. |
How to apply
Open IRIS Tweaks → Optimizations → Network. Toggle individual tweaks or use Dashboard → Optimize now for all recommended tweaks in your tier.
Cloudflare DNS
The Cloudflare DNS tweak changes your active network adapter DNS to 1.1.1.1 — affects all traffic on that adapter.