Thanks. Surely this was a performance hit even before Spectre? Also, any good technical resources that concisely describe FRED? I found this, which isn't bad

Thanks. Surely this was a performance hit even before Spectre? Also, any good technical resources that concisely describe FRED? I found this, which isn't bad but it's a bit more dumbed down than I'd like: https://www.tomshardware.com/pc-components/cpus/amd-adopts-fred-together-with-intel-for-zen-6-architecture-replacement-for-decades-old-idt-can-improve-performance-and-stability https://www.tomshardware.com/pc-components/cpus/amd-adopts-f...