8266 wifi ping problems

On my router, I can't configure static IP addresses specifically, so I set the start address to 192.168.1.100 and I give static addresses to anything that needs one in the 90-99 range by configuring the individual devices.

Obviously I overestimated the number of static addresses I would need.

If yours is the same, you have the potential for DHCP to give out 34 and cause a clash.