Nodejs, Optimal parameters for sequelize connection pool?

Question

I found a lot of answers about config connection pool in java ex here, event tool for profiling pool flexy-pool.

In our nodejs app, we started to have SequelizeConnectionAcquireTimeoutError errors, with default sequelize connection pool config. We ran some performance tests using locust with different configurations:

I want to know what configuration you use, how you chose them.

Thanks!