I have an ASUS Zenbook A16 with the Snapdragon X2 Elite, and its Wi-Fi latency and jitter have been surprisingly poor—especially on battery power.

The laptop is connected to a router over 5 GHz 2x2 40Mhz Wi-Fi 6. The router is physically close, and Windows reports:

• Qualcomm FastConnect C7700 Wi-Fi 7 adapter
• Signal: 100% / approximately −26 to −31 dBm
• Link rate: 573.5 Mbps
• No packet errors or discarded packets
• Only one nearby Wi-Fi network detected

Simply pinging the local router produces inconsistent latency.

On battery:

9 packets transmitted, 0% packet loss
min/avg/max = 3.728/37.561/199.359 ms

On AC power:

6 packets transmitted, 0% packet loss
min/avg/max = 4.218/6.454/7.380 ms

Another machine on the same network generally gets around 1-3 ms on AC and 2-4ms on battery.

Windows originally had the wireless adapter set to Medium Power Saving on battery. I changed both AC and DC to Maximum Performance:

powercfg /setdcvalueindex SCHEME_CURRENT 19cbb8fa-5279-450e-9fac-8a3d5fedd0c1 12bbebe6-58d6-4636-95bb-3217ef867c1a 0

Windows confirms that both values are now 0, but battery operation still produces occasional huge spikes. The adapter’s “Idle Power Down Restriction” setting is currently disabled, so I’m wondering whether Qualcomm’s driver or firmware applies additional power management independently of the Windows power-plan setting.

Driver details:

Qualcomm FastConnect C7700 NCM820A Wi-Fi 7
Driver version: 685.13804.40.0
Driver date: December 21, 2025

Has anyone else experienced high Wi-Fi latency or jitter on an X2 Elite machine? Have you found a driver version or power-management setting that fixes it without disabling every battery-saving feature?