D-Link DIR-652 User Manual page 37

Section 3 - Configuration
Enable QoS This option is disabled by default. Enable this
Engine: option for better performance and experience
with online games and other interactive
applications, such as VoIP.
Automatic This option is enabled by default. This will
Classification: allow your router to automatically determine the
network priority of running programs.
Dynamic This option should be enabled when you have
Fragmentation: a slow Internet uplink. It helps to reduce the
impact that large low priority network packets
can have on more urgent ones.
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