Sonarr is a SPA, also our backend is C# vs python, which generally leads to better performance (contrary to what a lot of criticism we get, "why did you go with C# it's so slow" ok...).
The other part is that I did performance work for few years as my main job so I would say that adds a bit as well. right now we are working on refreshed UI which will be even more snappy.
The other part is that I did performance work for few years as my main job so I would say that adds a bit as well. right now we are working on refreshed UI which will be even more snappy.