Using a lighter encryption cipher like AES128 or CHACHA20 can reduce CPU load on older hardware or NAS devices. 3. Fine-Tune Hardware Performance

Start with 8 to 12 connections and increase in small increments (e.g., +5) until speeds stop improving or start dropping.

For high-speed connections (150MB/s or higher), manual adjustments in Config > Special can help: SABnzbd Forumshttps://forums.sabnzbd.org Slow download speeds with gigabit internet service

This feature unpacks files while they are still downloading. On lower-powered devices (like a Raspberry Pi or NAS), this can overwhelm the CPU and disk. Fix: Uncheck Direct Unpack in Config > Switches . 4. Advanced "Special" Settings

If your ISP's IPv6 routing is unstable, it can cause slow or failing connections. Fix: Go to Config > Special and uncheck ipv6_servers .

Moving your Incomplete and Complete folders from a mechanical hard drive (HDD) to a Solid State Drive (SSD) is one of the most effective ways to boost speed, especially on gigabit connections.

Slow download speeds in SABnzbd can stem from a variety of bottlenecks, ranging from hardware limitations to suboptimal software configurations. Troubleshooting these issues typically involves checking your hardware, network, and internal SABnzbd settings.