what are the pros and cons of profiles vs containers? I like to set-up firefox using profiles better than containers because: I can set up each profile with its own extensions I can set up each profile focused toward a task in isolation from all other tasks I can set up each profile for a different user that does not see another users containers But I have issues with the set-up this way I prefer; and, these issues need to be and will be addressed in other questions like: I have noticed when I have two profiles open at the same time there will be ads in one profile that could have only come from the other profile. The title of this post will be: Is any body aware when two profiles are open at the same time there is a close talk between them? The whole experience is slow even though I do not have many tabs open in the profiles I use the most. The title of this post will be: Firefox is slow - will multiple profile affect performance? Thanks in advance!