I'm on the Helix floor, I have the same issues I had with 2.90 and posted about now that I am on 2.91, I had sticking momentary midi footswitches on 2.82 but it was otherwise usable.
I am getting total freeze/lockup after a few minutes of use with 2.90 and 2.91, not sure what's triggering it. I'll still get sound, but everything is locked up and unresponsive, footswitches, joystick, display etc... Basically requires a shutdown and reboot to act normal for a few minutes, and since I use it with a DAW as the interface all that needs to be shutdown and restarted as well, it's almost unusable for even just practicing with the constant rebooting. I am using a great deal or midi signals to and from controllers, and to and from the Helix to a laptop DAW, including having the laptop give the Helix a master bpm via midi. So not sure if all the midi is triggering it, but it looks like plenty of others are getting lock ups as well. This hotfix came fast, but should I be submitting a support ticket?
I'm new to Helix as of 2.82, so I don't know what to expect from updates and hotfixes, or how fast and complete hotfixes are