I would be interested in a few pieces of information before attempting to judge the latency.
First, what is your distance from your DSLAM/SLICK/remote? If you are on a 10 meg connection on DSL (are you actually on ADSL or a different service?) then 300MS latency to pretty much anything should be a red flag.
Are you testing on a clean machine? Malware can consume massive amounts of bandwidth silently. Can you isolate the network and test directly through the ADSL router/modem?
Again, if this is actually ADSL, do you use the circuit for voice communications as well or is it only in place for broadband? Is the voice quality acceptable? If it is only in place for broadband, what are the noise margin readings and what is your attenuation?
If you are on a clean network (no malware, one PC directly connected to router), with no malfunctioning hardware on your side, and testing directly to one of your provider's servers/routers, then a 300ms ping time would definitely constitute a problem (at least by the standards of the company for which I provide support) and would warrant a technician further investigating the trouble.
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I would be interested in a few pieces of information before attempting to judge the latency. First, what is your distance from your DSLAM/SLICK/remote? If you are on a 10 meg connection on DSL (are you actually on ADSL or a different service?) then 300MS latency to pretty much anything should be a red flag. Are you testing on a clean machine? Malware can consume massive amounts of bandwidth silently. Can you isolate the network and test directly through the ADSL router/modem? Again, if this is actually ADSL, do you use the circuit for voice communications as well or is it only in place for broadband? Is the voice quality acceptable? If it is only in place for broadband, what are the noise margin readings and what is your attenuation? If you are on a clean network (no malware, one PC directly connected to router), with no malfunctioning hardware on your side, and testing directly to one of your provider's servers/routers, then a 300ms ping time would definitely constitute a problem (at least by the standards of the company for which I provide support) and would warrant a technician further investigating the trouble.