We had to do it, but it had nothing to do performance. Massive team dysfunction and differing skill sets made it so 3 or 4 people were working on our monolith

We had to do it, but it had nothing to do performance. Massive team dysfunction and differing skill sets made it so 3 or 4 people were working on our monolith and not very effective in getting things done. We had another 5 that were very effective on other projects that didn't know the monolith stack. After some discussion we built up a design that broke the monolith into 4 parts. This let the teams work more effectively, even if it's not as efficient. Docker compose running some integration tests with the builds helps some of the integration burden.