wifi spiking in speed

hello my wifi about everyday around 1030 begins to spike up and down (pic below). The logs have been saying TCP- or UDP-based Port Scan, Ping Of Death, Teardrop or derivative, and Illegal Fragments. they are targetting some ip address thats outside of the us. My question is what's happening and how do I fix this problem? Is it that someone on my network has a virus? or is someone connecting to my network trying to DDOS someone?

https://imgur.com/a/cbMOH

thank you