I've got high cpu usage (~90% constantly) after upgrading from Ventura 13.2.1 to 13.3. Setup: MBP-Pro 2019 1x 5120x1440 2x 2560x1440 1x 1600x1000 Everything used to work fine till the upgrade with this setup. But in my case the CPU usage caused by Google Chrome Helper (Renderer) processes. It's enough to open 1-2 instances of chrome and surf the internet and it happens. Closing chrome (quitting) helps after 1-2 mins and the CPU goes low. The weirdest thing that after reinstalling my MBP completely to 13.2.1 didn't solve the problem. And I have another MBP running 13.2.1 where there is no such issue occurs on this setup. At work I have built-in Retina + 2x 2560x1440 and everything is fine. No issues.