High ping spikes and internet disconnects

When there is a connection, What do the modem's signal stats look like ? Try getting them here http://192.168.100.1 or here http://10.0.0.1

Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.

What is the exact make and model number of the modem ?

Is this a WiFi connection ?

There is a lot of info on that page, so I tried attaching photos so you get what you need.  Let me know if that works?

I don't know if my pics are uploading or not.  I will do my best to give the info you need.  I am getting anywhere from -0.6 to 2.6 on the bonded and on the Downstream OFDM Channels  -0.3 to 3.6dbmv. 

on the upload bonded 45.8 to 48 Dbmv.  Then 0 on the upload OFDM channels. 

Signal to noise ratio ranges from 39.5 to 41.7.

Modem is the Netgear CM1000

Since you are a new poster, it needs to be approved by a Forum Admin. That could take some time. In the interim, you could try hosting it at one of those free third-party pic hosting sites like Imgur or Photobucket and post the link to it here.

My opinion on amps are that they are a band-aid fix and should only be used as a last resort. Garbage in = more garbage out..

Without seeing the full screenshot(s) of the entire signal status page, the limited text of the stats that you posted are o/k although the upstream power is a bit the high side at 48 dB and it may be intermittently fluctuating even higher to out of spec levels. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, and latency problems.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.

The advice remains the same. Try to get the upstream power lower so that there is more wiggle room. Bear in mind that this may or may not be the direct cause of the problem. If nothing can be done. Get a tech out. Good luck with it !