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I've been having periodic packet loss for the last month or so at very specific times in the evening, and am at a bit of a loss on what to do.
To start off I'll explain that I live in a remote area, so I use a mobile SIM in a TP-Link router for household internet. The phone mast is quite literally at the bottom of the garden, so I've always had a very strong signal and quite fast speeds - enough for gaming and streaming simultaneously. I also have a number of smart devices around my home, including several Google Home devices and smart switches. Never had any issues in nearly 2 years with this setup.
Beginning at the start of December 2022, I noticed that I was getting very high packet loss (up to 30%, with higher spikes) while playing online. At these times my wife also noticed that YouTube, Netflix and iPlayer were buffering regularly or playing at low quality. We assumed at first that it would just be a temporary glitch, and left it at that.
After a few more nights I started investigating further. To start off I tried disconnecting our wifi boosters - no change. Resetting the router - no change. Comparing wired (PC) and wireless connections no difference. After resetting everything and even trying the hotspot on my phone, I gave up. Give it a couple of weeks, I thought. It's the Christmas holidays, maybe the lines are just busier than usual.
Come January and with no further change, I used pingplotter to test our connection over a few days and the results have been quite interesting:
This is an example taken over a 48 hour period. My latency (black line) is very stable. The red bars show packet loss. What's interesting here is that every day, at 15:00 on the dot, the packet loss starts to rise. It peaks and drops again at 19:00, then rises sharply throughout the evening before tailing back to zero at 23:00.
This cycle repeats every day, without fail, near enough to the minute. And it's exactly the same whether I'm on a wired or wireless connection, and is also the same using the hotspot on my phone (and we've tried this with 2 different Vodafone SIMs).
Surely this must be some technical glitch on Vodafone's end? As I mentioned it only started beginning of December 2022, but the connection is unusable for gaming in the evening and streaming is also slow.
Is there anything more that can be done?
Thanks for any help 
