Even if it is stable, the Gnome is slow and in the choice of applications it jerks if you notice and not good for a desktop interface today ... They have to thoroughly review the general fluidity because they have not taken care of it at all this time unfortunately ... In my opinion from this point of view the Ubuntu team are ahead of everyone, the Gnome 3.38 when you have a graphics card is great, fluid and perfect at all times and it is a pleasure to use it ... They said that do not use version 40 on Ubuntu, in my opinion there is still something wrong, unripe and maybe it's partly the cause of these problems I don't know. The fact is that they still don't use Gnome 40 on Ubuntu 21.04 ...