Sanity check: Vivaldi high CPU usage - Feddit UK

Before I dive headlong into debugging and throwing bug tickets around, I just needed a sanity check from someone else… I have an old Lenovo laptop as my daily driver / experimentation box (ie it gets a lot of paclages installed and removed) Recently I’ve been using Vivaldi’s built-in calendar to use as a CalDAV client for my radicale installation. It’s the only open tab and Vivaldi’s using ~20% CPU (according to htop)… actually, I just closed that tab… even with 1 blank tab the CPU’s the same. Is this just my battle weary laptop needing a good clean, or can someone else confirm? TIA