@David-TP So just an update. I disabled SIP ALG and UPNP in XE75. Since then I haven't had any issues. Maybe it's caused by bad implementation of SIP ALG or UPNP?

@David-TP Sure! Yes, this is the layout.

@David-TP No, I haven't tried to replace cable since my deco is new and I'm using the cable provided in the box. I can try to replace it next time. I will also check the speed on the main deco when...

My Dexo XE75 limits the speed to under 100mbps often, the temporary solution i found is to unplug fiber ethernet cable and replug it. This is so annoying since it happends so often, at least once a...