# Huge speed improvements for 8 slow steps >

We've upgraded 8 of the most used, and sometimes slowest, transform steps! Most should run about 15x faster than they used to, which means if a step used to take 1 minute to finish, it will now only take 4 seconds.

The Merge duplicate rows step, Remove duplicate rows step, and Insert row Numbers step will be faster in the flows that you already have them in.
In order to get the speed boost for the Count by group, Sum by group, and Average by group steps, you will need to replace existing steps with their new version from the step sidebar.
The Filter Rows step and Insert if/else column step will be about 4x faster in flows that they already exist within.

Source: https://parabola.io/updates/huge-speed-improvements-for-8-slow-steps