I used to have a near maxed out 2019 i9 mbp. The 2020 base model m1 blew it out of the water performance-wise.

Granted, a big part of that was the apple silicon, but the i9 was supposed to be a powerhouse. It just wound up spending most of its time thermally throttled.

Have you tried composer-2.5? Supposedly it’s fast, decent, and far cheaper than sonnet.