While gaming online I will randomly disconnect from the game.

When I play online games such as GTA Online, League of Legends, or Call of Duty Modern Warfare, I will randomly disconnect from the game and when this occurs I alt-tab and turn to internet explorer real quick to notice that my internet seems to disconnect for a few moments and doesnt allow me to connect to a website. My internet icon at the bottom left of my computer screen says that the network is connected still though and that its still running. While I am in my discord call I will hear my friends say "oh, he disconnected again." I can still hear them, and the disconnect problem only lasts around 10-50 seconds, but its constantly doing it making me have to rejoin the game or restart a mission (GTA Online.) To clear some questions up, yes, I use an ethernet chord that is connected directly to my modem which is an Arris Group, Inc Modem Model #TG1682G. This problem isn't only on my computer, it also persists amongst various devices within my household such as my ps4, phone, and sometimes TV. Here is a screenshot of my Downstream/Upstream/SNR numbers 
https://gyazo.com/e67113aa90717893d2dbba7188da282d