Audacity Lag Time/Running very slow

Hello my program is running very slowly. To make any edit such as a simple second of deletion, the loading time is more than one minute. Even to scroll up or down, copy and paste is having the same issue. For applying noise reduction, amplification, compression, etc is taking more than 5 minutes. I don’t think it should be taking this long. What should I do to check if it is fully compatible with my MacBook Pro running OS High Sierra 10.13.2? How can I clean up something or update the software so that it is running smoothly and quickly right now? I have Audacity 2.1.0 right now.

Let’s start by upgrading to Audacity 2.2.1. Version 2.1.0 is three years old.
– Bill