In case you have the chance to have acquired a Mac ARM Silicon, here's the version 1.4.1 of the YafaRay rendering plug-in which provides native support for that system when run with the version of Sweet Home 3D for the Mac ARM architecture.

[Edit] Note that versions 1.4 and 1.4.1 can only run from Mac OS X 10.12 because of the SHA-266 certificates used to sign the .dylib files of the plug-in. I'll try to fix this issue in a coming version.

@Masok77 How big is your SH3D file? Did you try with a demo of the gallery?