Intel 8260 contributing to High DPC Latency

I can assure you

• my BIOS is up to date,
• the driver (19.50.1.5) is up to date.

I've tried

• setting my power plan to High Performance,
• disabling "Allow the computer to turn off this device to save power",
• setting my transmit power to Highest,
• using WLAN Optimizer.

Under Windows 10 Home, I'm connected to the router with a 5GHz signal. The problem is that I'm having a stuttering when playing some FHD videos. This is clearly attributable to Intel 8260 because the problem goes away in the wired connection. What should I do?