Hello Together
I switched to the Unifi network (Switch 60W, USG, Cloud Key, AP NanoHD) because my Fritzbox 7490 was overloaded.
Since then I have been able to work stably in my home office for a long time.
About 1 month ago, various patches for the Unifi components came out and I installed them. Around the same time, massive problems started during telephone conferences in Skype or TeamSpeak. My upload has very strong fluctuations between 0.5Mbit and 110Mbit. The download is not affected.
Now I am not sure if this is due to the patches or the ISP (UPC Cablecom is).
Does anyone here have any ideas?

Question

Hello Together
I switched to the Unifi network (Switch 60W, USG, Cloud Key, AP NanoHD) because my Fritzbox 7490 was overloaded. 
Since then I have been able to work stably in my home office for a long time.
About 1 month ago, various patches for the Unifi components came out and I installed them. Around the same time, massive problems started during telephone conferences in Skype or TeamSpeak. My upload has very strong fluctuations between 0.5Mbit and 110Mbit. The download is not affected.
Now I am not sure if this is due to the patches or the ISP (UPC Cablecom is).
Does anyone here have any ideas?

Answer

I also use Unifi infrastructure in my home network. The Unifi firmware updates sometimes affect the WLAN performance, but the switches and gateway have never had any problems in my config. Have you already measured the wired performance directly behind the router?

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