When i upgraded to the 3.9.0 my internet connection become very slow, in the browser it took a while the load the pages. my configuration is based on VLAN’s:
VLAN6 is the internet connection with PPPoE to my provider.
VLAN100 is the WLAN network, only the accesspoint are attached
VLAN200 is the HOME nerwork, this is a cabled network with servers and workstations, all linux.