Unless the machines are identical you can not expect same results. Drivers and hardware do vary.
If you feel like it, change to another make WiFi.
There was a long discussion about USB issues and in the end it was a forgotten motherboard driver. I take it that since you build and install your own you will check that.
This happens universally, in all games, and in Windows. This may be related but also I have been getting "This Stub Recieved Bad Data" when trying to open programs occasionally. Yes, I uninstalled Nvidia audio drivers after I recently installed GeForce experience update (It started happening a day after this install). Below is a Ping test I did running "ping google.com -t"
I use Wireless on an A6200 (Yes, I reinstalled drivers) and this does NOT happen on other devices in the house, including a PC right next to mine.
GTX 750 Ti (Stock) (Running 1920x1080 @ 144hz, 1920x1080 @ 60hz)
12 GB RAM
120 GB SSD (OS), 1 TB WD HDD (Storage)
Windows 10 Home 64 Bit (Before Anniversary Update)
Yes I have tried turning it off and back on. Any help is appreciated, thank you