You say it's just a slow down but your ping is fine. How have you tested your latency? I just realized if you are basing your latency and loss on the line test or any line test from outside. some time ago Frontier did something to make any kind of ping or loss from an incoming test was changed so that it will not show the true status of data through the hop or device you are pinging. If you test each hop from your box going out you will see what I mean. Do a tracert to get the IP's and trust me test your first hop and you will see. Allso forget pings to most known big sites like google or yahoo I have allso found that Frontier's network favors them in out going pings too just stic to hops close to you try frontier.com this way you know you are on thier home network and you get real results as to where the trouble is.
Gozer, yes it was the line quality tests from this site. Heres my tracert Tracing route to frontier.com [184.108.40.206] over a maximum of 30 hops:
1 2 ms 1 ms 1 ms dslrouter.netgear.com [192.168.25 2 12 ms 11 ms 12 ms 184-12-48-1.dr01.hpjc.ny.frontier .48.1] 3 14 ms 13 ms 12 ms 220.127.116.11 4 17 ms 13 ms 13 ms ge--5-1-1---0.arr01.monr.ny.front 40.3.109] 5 21 ms 22 ms 45 ms xe--9-0-0---0.cor02.asbn.va.front 40.5.1] 6 98 ms 33 ms 34 ms ae3---0.cor01.roch.ny.frontiernet 7] 7 34 ms 33 ms 36 ms ge--0-1-0---0.car02.roch.ny.front 40.5.186] 8 35 ms 34 ms 33 ms 18.104.22.168 9 34 ms 33 ms 34 ms frontiertv.info [22.214.171.124]