Cuz u connected to 2.4Ghz on 857 or modem. Turn off all wireless on modem and then chk ur connection on 857 at 2.4ghz. Then turn of 2.4ghz on 857 and turn on 5ghz and test. Might make sure chl is 30s or 40s on 857.
Well, I think I found the problem. I made a noob move and forgot that I was supposed to use IE to flash and I used Chrome.
I reset to default and flashed and then reset to default again before configuring. WiFi was then stable and at 243-270Mbps but pages didn't load right on my LT. So, I reset to default and flashed to 1.02 again using IE. I forgot to reset to default and began configuring then remembered and stopped, reset to default twice and then configured. So far, stable but we'll see.
Another odd thing. When I reconfigured the first time and used the wizard to connect, I got the time zone as Pacific Standard time. This last time, I got the Bogota, Lima, etc. time zone.