NW Arkansas intermittent slow internet/high ping

Started noticing this about two weeks ago but it's gotten worse. I initially thought it might be my modem so I hooked up another (new) modem that a coworker had but that didn't make any difference. When it's not acting up, everything is perfect and like I mention below, restarting the modem will fix it every time.

My internet (Premier, no tv or phone) will slow to a crawl and when it does this, I get the following ping times to the first hop. Restart the modem and everything is fine, till it's not. Modem levels, while maybe a bit high on the upstream side, are no different when it's working great compared to when it's not working so great. It might be fine for a day or it might do this once every two hours. There is no internet activity going on during this ping test other than the pinging itself.

Before I call in and go through the whole reboot the modem routine, are there any other people on the NW Arkansas area seeing anything like this? Specifically, East side of Lowell.

PING 10.50.128.1 (10.50.128.1) 56(84) bytes of data.
64 bytes from 10.50.128.1: icmp_seq=1 ttl=254 time=317 ms
64 bytes from 10.50.128.1: icmp_seq=2 ttl=254 time=2141 ms
64 bytes from 10.50.128.1: icmp_seq=3 ttl=254 time=1434 ms
64 bytes from 10.50.128.1: icmp_seq=4 ttl=254 time=1711 ms
64 bytes from 10.50.128.1: icmp_seq=5 ttl=254 time=1355 ms
64 bytes from 10.50.128.1: icmp_seq=6 ttl=254 time=2124 ms
64 bytes from 10.50.128.1: icmp_seq=7 ttl=254 time=2009 ms
64 bytes from 10.50.128.1: icmp_seq=8 ttl=254 time=2338 ms
64 bytes from 10.50.128.1: icmp_seq=9 ttl=254 time=2394 ms
64 bytes from 10.50.128.1: icmp_seq=10 ttl=254 time=1438 ms
64 bytes from 10.50.128.1: icmp_seq=11 ttl=254 time=1109 ms
64 bytes from 10.50.128.1: icmp_seq=12 ttl=254 time=728 ms
64 bytes from 10.50.128.1: icmp_seq=13 ttl=254 time=1304 ms
64 bytes from 10.50.128.1: icmp_seq=14 ttl=254 time=424 ms
64 bytes from 10.50.128.1: icmp_seq=15 ttl=254 time=751 ms
64 bytes from 10.50.128.1: icmp_seq=16 ttl=254 time=2426 ms
64 bytes from 10.50.128.1: icmp_seq=17 ttl=254 time=2318 ms
64 bytes from 10.50.128.1: icmp_seq=18 ttl=254 time=1318 ms
64 bytes from 10.50.128.1: icmp_seq=19 ttl=254 time=1422 ms