Why is the game such a CPU hog suddenly?

I'm running Unity under Chrome 69 on a Win10 machine.

Right now, the Windows Task Manager says Chrome is utilizing about 4% of my CPU. But if I open the Chrome window that shows a list of my games, it pops up to 70-80% CPU usage. And when I minimize the Chrome window, it reduces back down to 4%.

Trying to take a turn is extremely difficult. Keypresses are being dropped and ignored.

try ujs and see how that works. I cant speak to unity in browser, but the standalone app for members is really good

https://www.warzone.com/ChangeWebMode

Default is UJS, which should be working fine. Try Mozilla Firefox if youre using Unity.