Netgear nighthawk 5ghz wifi speed extremely slow

I pay for 200 mbs download speed with spectrum. Im connected to a spectrum modem which connects to my netgear router, from that router i connect an ethernet cable directly to my computer, this connection results with appropriate speeds. The problem is on my 5g wireless connection i get 20-30 mbs download but still get the 10 upload. I dont know if i do not have the optimal settings for my specific router or not but to me it seems like it is way to slow. I have tried several different channels and it has came back with the same results need help asap.