Viewport rendering increasingly slow

Hi everyone ! If someone could help me it will be amazing !

the isue is that the rendering went from two seconds to one minute per frame.
I’m working on a project and I do the rendering with the rendering viewport in EEVEE , I have a NLA animation system, with realistic clouds and a huge city but I do the rendering with isolated elements in several png sequence.

If someone have an idea of why the rendering is considerably longer whereas I’ve only made a few modifications to the NLA and nothing more in between. Thanks !

Hey, I work with Eevee a lot, and for the big city you are doing, I don’t know if there is a way to simplify it, maybe try simplifying the clouds, and other assets that are far away and don’t necessarily need to be seen as detailed, and a minute rendering for me is pretty good, so I might recommend just letting the process go, or maybe trying a render farm?