r8000 slow wifi and wired speeds

It isn't easy to understand what you are saying, but reading between the lines it seems that you are getting much slower wired speeds out of the router than out of the modem. (Wifi speeds are a red herring that we can ignore because that will never get anywhere near the wired speed because that's how wireless works.)

The first thing to try is a different cable connection from the modem to the router.

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Stim4 wrote:

After the reset, download speeds over wireless climbed to 250Mbps with 45Mbps down.

 

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Again, it isn't easy to understand what this is saying because it sounds like the wrong way round. Is that 250Mbps up and 45Mbps down?

For most wifi clients, 250Mbps is a good speed.

It might be worth a bit of background reading.

Understand Wi-Fi 4/5/6 (802.11 n/ac/ad/ax)

@duckware knows their stuff and can bust a few myths and cut through marketing hype.