Night Hawk MR60 Slow WiFi

UGH!  Not sure what happened, I replied and the response is gone so oligopolies if this shows up twice

@Chainsaw801 wrote:

I don't know what speed your ISP is providing to you, but it looks like you have the same problem.  Wi-Fi 6 should be much faster. https://dongknows.com/wi-fi-6-explained/   Regardless of what device I am connected to wirelessly the system should not have any bottlenecks in it for 800Mbps.  Speeds are depending again on building materials, distances between the MR and MS and also depends on device support. 2x2 MIMO devices top out at around anywhere from 400 to 700Mpbs depending on support and all the variables in between the device the the mesh system. Devices with 4x4 speed will see near 900Mpbs or over. Speed will drop OFF at greater distances. You wont see same speeds at the MS as you will at the MR. Nature of the wifi beast here. 

I did change the Power plan on my PC from Balanced to High Performance.  This gave me a boost of around 130Mbps

As I mentioned, my hardware is Arris SB6190 cable modem through Xfinity. 

You should look into getting a different model model, there is a long standing issue and vulnerability with that model modem. Check DSLReports site for a long forum thread regarding that. Yes, I agree.  I am looking at getting a new modem from Xfinity.

I have run a 50' Cat 5 cable from the MR60 to the NIC on my pc. I hit full speed as I am paying for from the ISP.  So, I know the wired connection between the modem and the router are sufficient.  If I run the Ethernet cable to the back of one of the satellites, it drops to 500Mbps. CAT5 cabling isn't rated for 1000Mpbs. CAT6 would be recommended. I understand, I was pointing out that I used a 50' CAT5 cable to test and achieved the full 800Mbps I am paying for.  The cable between the modem and the router is good.  I believe it's the same one that came from the kit when I bought it.

The distance between my satellites is set to the manufacture recommendation. What IS the distance between the MR and MS and sq ft size of your home? My home is roughly 2400sqft. I am using one of the two MS60s that came in the kit. The distance is roughly 50'-60' from the MR60-MS60. The MR60 is in the basement and the MS60 upper bedroom as pictured.  The distance from the MR60 to my PC in my office is about 18' there's only a single interior 2x4 wall between them. I have a second MS60 not used that I plugged in simply to test the cable from NIC to the MS60 that didn't prove to help.

I've moved one into my office just for testing purposes. The speeds do not change connected to Wi-fi if I'm connected to a MS60 or the MR60.  I've tried both ways by power off the MS60's to force the connection to the MR60 that is literally 15 feet away with nothing but an internal closet wall between me and it. 

I've gone through all the settings for both the Wi-Fi card (Intel(R) Wi-Fi 6 AX200 160MHz) and the NIC 

Chand Width on the Wi-Fi card is set to Auto for both 5Ghz and 2.4Ghz
Wireless Mode 802.11ax 

MIMO Power Save Mode Auto SMPS
Preferred Band is 5GHz

Throughput Booster Enabled.
I'm using channel 153 on the 5GHz to avoid conflict with neighbor Wi-Fi in the 44-40 range. I posted an image of my Wi-Fi analysis in the original post. 2.4GHz is set to auto. 

Security is set to WPS2-Personal [AES] 

I'm not sure what you're looking for on the Advanced vs. Basic Wi-Fi settings.  

Screen shots would be good here for these two items.