Forced to reboot every time I want to control Fyrtur blinds

Recently my hub has started to require multiple reboots per day in order to control my IKEA blinds. It just loses comms with the blinds, and restarting the hub fixes it for a few minutes.

This had worked reliably for years and now it's broken every day, several times a day.

Any ideas on what might be wrong?

C7 hub, current firmware build

What driver are you using to control the Fyrtur Blinds? Also, how far away are your blinds to your C7 Hub?