Do prefabs slow down the build time?

I ran into a strange problem. I have a lot of small prefabs with an interface and different objects. Recently I noticed that the speed of building the project has increased a lot, I began to look for where it is. Found that 3-4 prefabs add 5 minutes to the build time, although I do not have the weakest computer. Is that how it should be? maybe some compression settings or something like that?

A prefab can contain 1kb pf data or 4GB of data counting all assets it uses, and that’s without cross referencing them.
I don’t think I can help that much with the info you gave. I do recommend to update to the latest LTS to get all the bugfixes.

It’s not a good idea because I use unity 2022-2023 and there fixed other bugs and problems which I have in previous versions. Size of my prefabs not more then 2mb. Maybe there is any way to know which file stucks in build process? I’ve tryed to use process manager but not see ill2cpp in processes duriing buid…

Check the build logs to see the difference. Since you use beta/alpha if it’s reproducible make a bug report.

Where I can check the build logs?

I founded problem in uniteditor.log

Serialization depth limit 10 exceeded. There may be an object composition cycle in one or more of your serialized classes.

At this point, the editor keeps writing this endlessly. Very strange, because in previous versions there was no such gap…

So, when I fixed serialization depth build still tooke endless time( but now no any new messages in editor.log I don’t see besides ask recompile lighting for new unity version. And this message call sometimes, not every minute like serialization. It’s look like builder shoose random files, somewhere breaking and return to lighting. And it starts endless loop without any notification how I see. Even computer works more quit then in active build process.

Why unity developers can’t add string with current file on work under window build process?