I use Hauptwerk, but would suggest you source your sample sets here:
https://piotrgrabowski.pl/
I use Piotr’s sample sets exclusively, and have never been disappointed.
Granted, I am only speaking to the Mac users, but my experience tells me otherwise. (...having owned and managed macs all the way back to 1990 (my first was a Mac SE)).I'm happy that your Mac worked for you that long, but upgrading a component doesn't make your computer run slower, and software isn't "designed" to run on certain hardware in the consumer desktop space.
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