i switched from windows to fedora 30 sb a while ago and since then, i encounter alot of random ping spikes on wifi, which makes online gaming nearly impossible.
on all the years on windows i never encountered this problem, so its clearly a linux/fedora problem.
what i tried:
i followed this blog, which recommends to set a bssid, to disable background scanning.
i tried 4 different wifi adapter. 3x usb (MT7610U, RTL8192CU and RT5370), 1x pcie (ar93xx).
this is what the spikes look like (it should be ideally a flat green line).
the spikes are random, i dont see any pattern.