Access point crashing

[PaddyB]

Hi,  since last night the access point has been causing problems a few minutes after rebooting. Pi3 (not +) set to RPi3: AP + client.   After a reboot it will work OK for a few minutes then show no internet connection on a connected device then disappear on laptop/tablet. Edit - OK, still showing up on a win10 laptop but getting "cannot connect to this network" error. Also a connected esp8266 will be unconnected. Using internal wifi & usb/wifi dongle. 

Not sure where to look.....   TIA

This when AP not working >

Code:

$ ifconfig
eth0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
       ether b8:27:eb:0e:29:55  txqueuelen 1000  (Ethernet)
       RX packets 0  bytes 0 (0.0 B)
       RX errors 0  dropped 0  overruns 0  frame 0
       TX packets 0  bytes 0 (0.0 B)
       TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
       inet 127.0.0.1  netmask 255.0.0.0
       inet6 ::1  prefixlen 128  scopeid 0x10<host>
       loop  txqueuelen 1000  (Local Loopback)
       RX packets 6527  bytes 628711 (613.9 KiB)
       RX errors 0  dropped 0  overruns 0  frame 0
       TX packets 6527  bytes 628711 (613.9 KiB)
       TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
       inet 192.168.43.97  netmask 255.255.255.0  broadcast 192.168.43.255
       inet6 fe80::20f:60ff:fe05:8d9f  prefixlen 64  scopeid 0x20<link>
       ether 00:0f:60:05:8d:9f  txqueuelen 1000  (Ethernet)
       RX packets 12999  bytes 1709137 (1.6 MiB)
       RX errors 0  dropped 0  overruns 0  frame 0
       TX packets 16042  bytes 9325613 (8.8 MiB)
       TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlan1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
       inet 10.10.10.1  netmask 255.255.255.0  broadcast 10.10.10.255
       inet6 fe80::ba27:ebff:fe5b:7c00  prefixlen 64  scopeid 0x20<link>
       ether b8:27:eb:5b:7c:00  txqueuelen 1000  (Ethernet)
       RX packets 8932  bytes 923405 (901.7 KiB)
       RX errors 0  dropped 4  overruns 0  frame 0
       TX packets 13710  bytes 7888369 (7.5 MiB)
       TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Code:

pi@openplotter:~ $ head -n2  /home/pi/.openplotter/openplotter.conf && echo "---Raspbian version---" &&  cat /etc/os-release
[GENERAL]
version = 1.1.0
---Raspbian version---
PRETTY_NAME="Raspbian GNU/Linux 9 (stretch)"
NAME="Raspbian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"