FPS dropped drastically, probably a game performance scheduling issue.

My computer's frame rate drops from 180 fps straight down to 80 fps when I'm in the game's training range and ranked matches. It's really unstable and I have no idea why. Monitoring in the background shows the CPU and GPU suddenly throttling. I've tried locking the frequency with MSI Afterburner and ThrottleStop, but it's the same. This only happens with Apex, and it started happening right after the anti-cheat update. I upgraded to Windows 11 version 26H2. Last season, after the update, there were no stutters, but this season I'm having serious frame drops. I've tried turning off hyper-threading, clearing shader caches, etc., nothing works. I'm out of options. This is a nasty bug, and a lot of people are experiencing it. Please fix it as soon as possible.