Task Manager for addons - Find out which addon is slowing down your game

/nap, /addonprofiler or click the minimap button to toggle the UI

With patch 11.0.7, blizzard added in-depth information on addon performance, but the UI they added in 11.1 leaves a lot to be desired.

Various addons that show CPU usage use an old approach, which severely impacts your performance. The approach used by this addon has none of those problems.

This addon will display all the information you could ever wish for!*

*limited to the information blizzard is willing to provide 😉

You can search for specific addons, and sort by any of the columns. Show data only for the last x seconds, last raid encounter/combat, and more.

There are 3 modes available:

Active Mode - actively records performance of all addons every frame, which allows creating the most thorough summaries, at the cost of some memory and CPU usage.
Performance Mode - records far less information to improve background CPU usage, but reduces the granularity of information. Time based historical information will no longer be available.
Passive Mode - absolutely nothing happens in the background, no information is gathered. This limits the information you can see, but can be helpful if you have an especially slow system and even performance mode costs too much CPU time.

There are various slash commands available, type /nap help for a full list
For example, you can macro /nap toggle to start/stop recording only a specific section of a fight.

Addon Profiler - CPU Usage