At the same time, you're told that it's your add-ons that are causing these problems.
Hello
Addons are often reiterated as causing problems in the game, because it's been proven many times that addons are large causes of UI issues, drastically reduced FPS, and interfering with intended game functionality. As a team there are many false reports about same issues always that are very often caused by addons, and whilst team is often conscious of addons when updating game, it's not always possible to retain original addon functionality, especially considering that most addons at this point are 10-15 years old, unmaintained, and using outdated API functionality/methods.
As an example, with your addons installed which you sent to team yesterday, I currently receive 32% less FPS on average than using very basic addon package.


Obviously it is expected that users will install addons, but it is important to really only addons that you need, and understand that addons can and will break over time, as well as drastically reduce performance (especially poorly coded combat engines, of which has been seen countless times), especially when many addons are edited by people specifically and shared about, which when maintaining client means they can easily be not compatible with current versions tested by team(FSlimUI as example with most recent patch).
Greetings