Hi, i have gone through many previous post and some important info posted by sifus here, too many and i really cannot read thru all. Not sure anyone have exactly same setup before, but my problem is as below:

Im on the 500mbps plan, I saw it was mentioned before that the TP Link C1200 will not give the wireless speed more than 300mbps. im getting only 200mbps infront of the router.
If i change to Archer A7, connect using TP Link AC1300 T6E PCIE wireless adapter, can i get over 400mbps?

I saw TP Link MY youtube channel that posted some real speed test videos mainly using the TP-Link Archer T9UH USB WiFi Adapter, should i get this as well?

p/s my T6E is newly bought one, i thought it can compatible with the 500mbps plan