Who I have the same questioned this topic

I am having trouble staying connected to WiFi on my Samsung Galaxy S6.  This has been going on for several weeks.  I have noticed this problem at home as well as on public WiFi.  The phone will connect to WiFi for a few seconds and then disconnect, it will never stay connected for more than 2 or 3 minutes, usually less than a minute. I usually have to manually reconnect to get it to say connected for a few seconds or a minute or 2 again...maybe long enough to view a page or something.  Sometimes it will reconnect by itself, but again disconnects.  I have tried just about every setting I can find on the phone and reset the wireless settings...  I have even turned off 2.4 GHZ on my router at home thinking it might be an issue switching between 2.4 and 5.  Have tried the phone in airplane mode thinking it was something to do with trying to switch between WiFi and data.  Nothing I do seems to help.  Running Android 7.0 showing security patch level December 1, 2017.  Anyone else experience anything similar?