Replacing the Wi-Fi module in the laptop (easy swap if you're comfortable swapping in memory and SSDs, you can do this) Place the laptop next to the wireless AP/router (or as close as possible)ĭisabling Wi-Fi 6 (dropping back to 802.11ac Wi-Fi 5) can help as its not as susceptible to interference if you're further away from the AP/router Probably can be fixed if they can build a proper driver for the MT7921 card but until then, you have only a few options: The higher the data rate and complexity of the modulation, the more susceptible it will be to interference, and if the radio transmitter doesn't adapt quickly to failures, most of the packets will just be lost in transmission, resulting in very poor performance. You can see in my AX210 card example, the receive side (AP to laptop) was running at MCS 7 for the 80mhz wide channel, 2 spatial streams. It appears the MT7921 has been coded to try to stick to the highest possible Wi-Fi speed at all times, so anytime the signal is less than perfect, the performance drops off a cliff as packets just get lost over the air. With Wi-Fi there are modulation schemes and the radio transmitter has to decide on which MCS rate to use (modulation, coding, channel width) - and different devices/radios do it differently. See below (using 802.11ac in this example, 866 is the max rate for 80mhz channels) One thing I noticed is that the MT7921 will always try to hang on to the highest speed while the Intel cards are constantly changing their transmit/receive rates. AX200 worked fine but I wanted 6E capability to test 6E in the future. I have said MT7921 card in my Asus Zephyrus M16 that I have since replaced with both an Intel AX200 and AX210. This card will have problems with Wi-Fi connectivity where throughput will be very slow in a single direction (transmit or receive). If you bought a recent Asus laptop chances are it came with a MediaTek MT7921 Wi-Fi 6 wireless card instead of the more widely used Intel AX200 that Asus used previously.
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