[BUG] Register / sign in is slow

[bitknox]

Describe the bug
The endpoints for registering and signing in take one second to complete. The endpoints should be faster, as the timeout duration in the simulator is going to be 500ms (see teams)

To Reproduce
Steps to reproduce the behavior:

1. Run the test suite with the verbose flag
2. See that time taken to register and sign in is above one second

Expected behavior
The endpoints should complete within 500 ms.

Additional context
This is most likely due to the cost we use in bcrypt hashing, decreasing the cost should greatly decrease response times.