You can program the regen setting to a lower value with most of these controllers. You need a programming cable and the software. The available settings may differ from one model to the next so the software has to be the correct version to match that model. There are several topics discussing the programming. On most of them, there are only 3 settings, so your choices are limited.
Here's one: https://endless-sphere.com/forums/viewtopic.php?f=2&t=27927