Lenovo X1 Nano randomly freezes or shuts down during Teams/browser use

Hi everyone, I’m using a Lenovo ThinkPad X1 Nano and I’m running into a frustrating problem I can’t shake. Whenever I load my website Lauth Investigations (including the WordPress backend) or join video calls, the laptop will behave erratically: browsers freeze or become unresponsive, pages (and the WP admin) hang for long periods, video/audio stutters during Teams calls, and in some cases the machine will hard-shutdown or crash instead of just recovering. The behavior often looks like a sudden spike in CPU/latency followed by a freeze or forced reboot — everything will be fine for a while and then the issue appears mid-session.

I’ve already tried the usual troubleshooting steps: installed the latest Windows updates, updated Lenovo firmware/BIOS and drivers via Lenovo Vantage/System Update, updated Intel drivers (including ME), disabled hardware acceleration in browsers, tested with and without the dock, and reset power-plan/processor maximum states, but the problem still pops up intermittently. It’s making day-to-day work (and editing the WordPress backend) unreliable.

Has anyone else with an X1 Nano seen these exact symptoms (freezes, lags, or shutdowns tied to Teams or heavy browser/WordPress use)? If so, what concrete fixes worked for you, specific BIOS versions, driver rollbacks, Teams settings, or Lenovo/Intel patches that actually stopped the crashes? Any configuration or logs I should collect to help diagnose it would also be appreciated. Thanks in advance!