I have a Nitro 5 AN515-51 and my problem seems to be related to the network adapter, but here is my issue;
When I stream, either via Netflix/Twitch/Youtube the videos always seem to cut and just generally lag. I have the same issue when I play games, my ping seems to jump and I cant play for my life. I've had the laptop for 11 months and this as just started a month ago and it happens at many places (friends place and mine also). I noticed that in the task bar in the performance tab that my WiFi seems to always jump to 100% when the issue occurs.
I wanted to upgrade the SSD and Ram of the laptop once the warranty is over but I'm hesitant since this issue has been more frequent than when it started.