I'm having ping spikes of around 2000 with my Archer T4E pci-e wifi adapter, it's not my router, it doesnt happens with other PCs, it's all up to date i guess, WiFi works ok with my Wireless USB adapter (TL-WN722N) but it doesn't have 5ghz compatibility so i need help. There are 5 meters between PC and Router so i don't know what to do... Please ask me for the info you need to help me