I've just downloaded "Additional Tools for Xcode 13" after today's release, and installed "Network Link Conditioner.prefPane" on my macOS Big Sur 11.6 (20G165).
But it just don't work. Every time I try to open it an error appeared.
Dose the tool only support macOS Monterey which Xcode 13.0 (13A233) dose not support?
BTW, the workaround for me is using the tool in "Additional Tools for Xcode 12.5"...
For those visiting here and looking for an up to date answer, I just published this article: https://www.avanderlee.com/debugging/network-link-conditioner-utility/
Apple's Network Link Conditioner works great for macOS testing, but if you're testing your iOS apps, I highly recommend checking out this tool: https://youtu.be/xK3iI5TzuA4
It only affects the app you're testing on the iOS Simulator and keeps your Mac's connectivity untouched: you can still enjoy a blazing fast network condition while your Simulator's app becomes slow.
This is a crucial difference as you can keep your development flow going, use tools like AI to find answers, and properly support slow networking in your apps.