mobile

Anyone else having issues with 5GHz wifi becoming unresponsive and needing to be turned off and immediately back on to kick it into working?
I've got Smart Network Switch and Download Booster (switch to mobile data if wifi is no good; use wifi + LTE) both switched off, so they shouldn't be a factor.. I even switched them back on and then off just to be sure that they were in fact off.

After a painful day spent trying to transfer data to the new phone, and installing all of my usual apps - having to disable and renable wifi at least 50 times throughout the day - I decided to switch from using my 5GHz wifi to 2.4GHz (same router), and it now seems fine. Switching back to 5, and I end up back with the same result - wifi will work fine for a while before stopping.
My Galaxy S5 has no issue using the 5GHz (and neither do any other devices I have), so it doesn't appear to be the router (Asus RT-AC87U) at fault unless there's just some compatibility issue with the S6.

Phone is G920I (Australian version, 64GB)