Dear Turris users,
we were trying to figure out what is going on with SDIO Wi-Fi and guest network for quite some time. We haven’t got to the exact root cause yet as it is working on some devices and doesn’t on others. But in general, the feedback we got and we were later able to reproduce in our testing environment is that with guest network enabled, the Wi-Fi is much less stable.
//EDIT: We found a solution and implemented it in Turris OS 5.0.4.