Data Stops Working Over Wifi on PC, Though Still Connected

Computer: HP Omen 30L, running Windows 11.

I was watching YouTube, left a comment on a video, and it just slowed down to almost nothing. I quit and restarted Firefox and now absolutely nothing would load. The machine was still connected to wifi (according to the system tray icon), but all data had just stopped flowing. I tested the wifi on my smartphone and it still worked. A reboot of the PC restored the data flow (for now). This didn't happen when I was on Verizon Home 5G; it started after I switched to Comcast. What could possibly be causing these random data stoppages?