My download speeds are fine but my upload speeds have gone drastically down, hovering around 0.20. I talked to Cox support and the person said I need to upgrade my router. I'm skeptical because it was fine earlier in the day but all of a sudden I started to notice packet loss while in the middle of a game. Router is Netgear AC1200 and was bought in 2018. Do I need to replace router for slow upload speeds?