Region : Argentina

Model : TL-WDR4300

Hardware Version : V1

Firmware Version : 3.14.3 Build 150518 Rel.70901n

ISP : antel

I have a 120/12 mbps plan and Via ethernet i reach this speed trough the router without problem, but when i access via wifi the speed is less than 50 mbps, but the upload speed is the correct, only limit the download speed.
I owned a TP-WR740N before the TL-WDR4300 and have the same problem(in this case the maximum speed was 25mpbs downloading) the isp told me that maybe the old router may limit the speed, so i buy a new one (TL-WDR4300) but now i have the same problem, the only thing is that now the limit es 50mbps, is there any solution? is possible to have a 120mpbs connection via wifi on this router?

Thanks!