Internet Connection problems

[Sonic The Rat]

Hi! Not new to desktops but also not very expirienced. I need some help. For my pc, I am having some troubles regarding internet connection. I have resorted to a usb adapter for Wifi. This was not my first choice regarding internet connection. My router is nowhere near my pc setup and I would be unable to access ethernet at the moment. I have tried Wifi cards but they still get the same unfortunate results as my current usb wifi adapter. Anywho, I enjoy gaming, but I can't help to notice when playing online/multiplayer games that I get lag spikes or conection freezes every roughly 5 seconds. My laptop along with my family's desktop has no problems as such and expirience no connection problems like I do. I used to game on my laptop and never got the connection freeze. I am able to stay in game and not be disconnected but can't help to lag for about a second or two every 5 seconds. I have had this problem for as long as I can remember on my desktop. I always wondered if it was my usb adapter or pci-e slot so even went as far as getting a new expensive Asus usb Wifi adapter for christmas but still get the same connection spikes. My friends either have ehternet or wifi cards and those who have wifi cards have a totally fine time playing online games. I can even clearly see my connection spikes happen when on discord my three green connection bars when in a voice chat goes to one red for a second or two then back to three green bars. In multiplayer games I would rubberband back to my spot roughly 1 second before th lag. I don't get any problems like these since offline games such as City Skylines or Slime Rancher don't have these lag/rubberband problems. Have had this pc for about 3-4 years now. Can't help to think if it's the motherboard or something. (I honestly couldn't know). Help would be great!

 

GPU - NVIDIA GeForce GTX 950

CPU - Intel Core i5-4430

Ram - 24.0gb

Storage - 1.0tb

Motherboard - Asus z97-Pro Gamer

Bios - American mega trends inc. 2203 2016-02-26

Power supply - evga 500w

Operating system - Windows 10 pro 64bit