Safari stops loading sites until reboot

Hi all, has anyone else encountered an issue with loading new sites on Safari? I can't seem to correlate it with anything - I can be logged in fine all day - Internet still working but then I can't load new sites in Safari. The only thing guaranteed to work is a reboot. Does anyone have any other tips on what to try or to help diagnose when it happens so I can get to the bottom of it?

TIA

System Version: macOS 12.0.1 (21A559)

  Kernel Version: Darwin 21.1.0

  Boot Volume: Macintosh HD

  Model Name: MacBook Pro

  Model Identifier: MacBookPro18,4

  Chip: Apple M1 Max

  Total Number of Cores: 10 (8 performance and 2 efficiency)

  Memory: 64 GB

  System Firmware Version: 7429.41.5

  OS Loader Version: 7429.41.5