Hi, I’ve had the issue across 2 xbox’s, both of which are connected wirelessly. I suppose gaming makes issues like this more noticeable, but I tend to be on long facebook audio calls too and they tend to lag every so often as well, whether via my phone or tablet. Another issue that pops up every now and then is when watching YouTube on my laptop/tablet, the quality will default at poor quality rather than hd, at times where the connection isn’t operating at its best. All instances via a wireless connection.
What I could do is try using my Xbox wired to see if the problem remains, and can get back to you tomorrow regarding that.