Why does my Wi-Fi speed and latency get worse when I turn on my PC?

I have recently started noticing that my Wi-Fi Is affected whenever I power on my gaming PC the speeds will drop from 14.8 mbps to 1.5 mbps and then slowly (with spots of descending) it will come back up to around 13 mbps. The same thing is happening to my PC even though it is connected by Ethernet and I have tried multiple cables. Also after plugging in my PC some games ( Brawl Stars was tested) become unplayable due to latency (but my ping doesn't change?). On my network I have all the usually stuff as well as a Raspberry Pi on Wi-Fi acting as a server. My Wi-Fi will also run at 1 mbps for t

Question by wvzack on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.