I’m loosing wifi entirely(kicked), for about 10 seconds then it reconnects.
I’ve had similar problems with different router brands before, never had this problem at home with my previous D-link. 
As I suspect, with Linksys WRT1900ACS it does not like when the mode is not specified (i’m on a windows 10 laptop).
Right now, I’ve updated the settings in my /etc/config/wireless file accordingly.
So far, I haven’t had another wifi dropping today. But I’ll uppdate when its been a week to be sure. So far looking good.
config wifi-device ‘radio0’
        option type ‘mac80211′
        option hwmode ’11a’
        option path ‘soc/soc:pcie/pci0000:00/0000:00:01.0/0000:01:00.0’
        option disabled ‘0’
        option country ‘SE’
        option txpower ’20’
        option htmode ‘VHT40’
        option require_mode ‘ac’
        option legacy_rates ‘0’
        option channel ’36’
config wifi-device ‘radio1’
        option type ‘mac80211′
        option hwmode ’11g’
        option path ‘soc/soc:pcie/pci0000:00/0000:00:02.0/0000:02:00.0’
        option htmode ‘HT20’
        option disabled ‘0’
        option country ‘SE’
        option txpower ’20’
        option channel ‘6’
        option require_mode ‘n’
        option legacy_rates ‘0’
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		This reply was modified 3 years, 7 months ago by 
Daarke01.
	 
	- 
		This reply was modified 3 years, 7 months ago by 
Daarke01.