why do i experience lag?

[aod626]

i experience lag most of the day even late at night(10pm-3am) when its suppose to be lag free but thats not the case.i have my own arris sbg6580 in my network. tv/monitor coby led 2326 TV its only two devices connected to it but when im gaming online i turn my phone off so its my ps4 only connected my speeds suppose to be 100/10 Mb have spectrum i checked my settings on my sbg 6580 and i noticed today my downstream frequency Was at 573000000hz channel id 58. few months ago my downstream frequency was at 670000000hz i contacted isp and they tell me some bs that they see that my modem having problems and they want a tech to go check out the problem which ots probably going to be the 7th time tech comes to my house and they always tell me that its my modem and that its not good modem to have and try to make me use one of there router try to make me pay more for rental fees. its nothing new to me it's always same story with them i hate my area i only got two isp spectrum and frontier which was fios but thats too much for there ridiculous speeds

 

[rhysiam]

To be fair to the ISP, it could be your modem. It's also pretty hard for them to diagnose issues on hardware that they don't own or support.

Here's what I'd do if I was in your situation:
1) Run a speed test and verify that your download speed and or latency (often called "ping") is not up to the standard you are paying for.
2) Agree with them for a technician to come out with one of their supported routers. Once installed (and before the technician leaves), run the speed test again and see if the problem is resolved. If it is fixed, then it clearly demonstrates that it was your hardware holding you back the entire time. You can't really be frustrated at your ISP for that, it's not their fault.
IF, however, their own router does NOT fix the problem, then you have some leverage. They'll need to acknowledge the problem and fix it. Once it's resolved, you can put your modem/router back and tell them to take their hardware back (stop paying for it), because you've demonstrated it wasn't your problem.