Silicon Mac

From NeoWiki

Silicon Mac users: NeoOffice is an application based on Intel. You must install Apple's Rosetta to run NeoOffice on Apple Silicon.

After installing or updating NeoOffice on a Silicon Mac, Apple's Rosetta will convert NeoOffice's Intel code to Silicon Mac code. During this conversion, NeoOffice will appear to temporarily hang or run slowly. Unfortunately, Apple's Rosetta does not convert code in the background. Instead, Apple's Rosetta only converts code when you are actively using NeoOffice.

So, after installation and after each update, NeoOffice will run slowly until Apple's Rosetta has finished converting all of NeoOffice's Intel code applicable to the features that you normally use.