Latency issues with ISP

[Nman_Pkr]

I don't know if I am crazy or if I am on to something. I have started having latency issues with my ISP. I get over 1k ms latency to locations in my neck of the woods. The crazy thing is if I run a speed test, then check latency my latency is dramatically lowered. If I call a tech they will charge me as my download "speed" is fine despite nearly unplayable latency with all games that require networking. I have included a video of this phenomenon.

 

Youtube ISP video 

[Bombastinator]

Latency can be in lots of places.  The ISP isn’t the only point where a problem could occur.  It could be the way your rig is set up for one.  There’s no rig info though so no way to know.

[Nman_Pkr]

I'm starting to think it might be my fault. I am using a docsis 3 8x4 motorola modem and a netgear nighthawk router. When restarting both the modem and router I see a pretty consistent 20ms latency to a nearby server. After about an hour my latency shoots back up. I am seeing 10 dBmV across all 8 download channels which I know is a bit on the high side considering I already have a splitter before the modem installed by ISP to help lower downstream signal. After restarting modem I see 7.6 - 8 dBmV across the board. My upstream dBmV is between 17 and 30 dBmV so I don't believe I can afford to place another splitter to drop signal. It just strikes me as odd that my latency goes down when performing a speed test as I would expect the opposite unless saturating my bandwidth does something that is helping my modem (clueless). If it makes a difference I am the first coaxial off the pole before a series of spliters that feed the neighboring apartments as I had really bad signal that would prevent me from getting a upstream lock that my ISP took care of by moving me down the splitter hierarchy. 

[Bombastinator]

22 minutes ago, Nman_Pkr said:

I'm starting to think it might be my fault. I am using a docsis 3 8x4 motorola modem and a netgear nighthawk router. When restarting both the modem and router I see a pretty consistent 20ms latency to a nearby server. After about an hour my latency shoots back up. I am seeing 10 dBmV across all 8 download channels which I know is a bit on the high side considering I already have a splitter before the modem installed by ISP to help lower downstream signal. After restarting modem I see 7.6 - 8 dBmV across the board. My upstream dBmV is between 17 and 30 dBmV so I don't believe I can afford to place another splitter to drop signal. It just strikes me as odd that my latency goes down when performing a speed test as I would expect the opposite unless saturating my bandwidth does something that is helping my modem (clueless). If it makes a difference I am the first coaxial off the pole before a series of spliters that feed the neighboring apartments as I had really bad signal that would prevent me from getting a upstream lock that my ISP took care of by moving me down the splitter hierarchy. 

There are apps that can check ping to various places.  I’m drawing a blank on names. Probably wouldn’t be useful if I could remember.   It can depend on how the speed test is being done.  My memory is Linux type stuff had a better selection and better control of such things but I’m terribly out of date and that may have changed.   The isp only controls part of the network for another.  Ping is a wildly complicated thing only part of which you control and only part of which the ISP controls.   The ISP is merely claiming the problem isn’t in the section they control.