I'm having an issue for months with the speed delivered by the 2.4Ghz signal of my router, the speed ( download speed) I'm getting is very inconsistent, around half the speed of the speed my ISP is supposed to deliver, the upload speed has no issues.

When I test the speed on the Ethernet cable or 5 Ghz connections I'm getting around 100 Mbps, and with 2.4 GHz I'm getting between 30 and 60. I have tried everything, changing channels, frequency, rebooting and restoring the router, enabling and disabling NAT Boost and nothing has worked so far.

If somebody knows what else I could do to solve this issue, please let me know.

Thanks!