Card on that unit is a Intel Dual Band 3168 AC card, WiFi 5. It's a basic card, max speed is 433 Mbps, on the 5GHz band. I'm assuming the Gateway is probably at least AX. Which band he's connecting to can have a significant impact. Depending on the capabilities of your router, there are upgrades that would also have a significant impact.
Quick question though. Did he connect the antennas that were included with the PC?
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