5G Home Internet nightly slow down

I am having the same issue, except my router actually switches to 4G and the speedtest does not even reach 2. This happens every evening about 8:30 PM EST. I reboot several times and finally give up. I’m going to start looking for a new carrier. Daytime is fine, but after 8:30 PM EST it is impossible to watch anything on Internet TV as it pauses and spins. This is not about placement of the gateway either. I’ve gone through all those motions too. And when you call for help they make you spend hours on the phone with support people that do nothing in the end to fix it.

Me too, daily service slowdown around midnight  on 5G internet  thing and on cell phone. Annoying  Should I switch to other cell and internet provider?

I am having the same issues.  Service was great for about 8 months and now is terribly slow and almost unusable in the evening.  My guess is that the network is congested and needs to be upgraded.  I’ve done a ton of repositioning and closely watching the metrics to get the best signal possible.  
 

I not only have slow speeds, but extremely high latency which is terrible for trying to play games online.  I can’t recommend the service any longer.

Same problem here. I had 5G Home Internet for 10 month now. It was great the first 8 month with consistent speeds of 250+ then the trouble started. My speeds now go down as low as 1.5 mbps and are consistently in the single digits during long stretches of the day. It does seem to be worse starting at about 6 PM but sometimes I have lousy speeds all day long. It usually gets better again late at night. I called customer service yesterday and after going through reboots and factory reset to exclude any issues at my end they told me that it’s an issue at their end and they were going to refer it to engineering. The support person scheduled a follow up call with me in 3 days to see if the issue has been resolved. At least they didn’t BS me and stated that it’s a T-Mobile issue. That’s still better than Xfinity. They had me try useless stuff over and over again and I would be without Internet for several hours during the day on a regular basis. So for now I’ll wait and see if Tmobile can solve it.

@CookieJ if you have the T-Mobile home internet service, then you must qualify for being in a 5G network area and able to receive a 5G signal from a nearby cell tower. 

That said, let's try to diagnose the cause so that we can resolve your issue. Please answer a few questions that will be helpful in the diagnosing the problem. 

1. Did you use the Placement Assistant in the T-Mobile Internet app? If not, you can access it from the app Home Screen: tap the More about connection quality link on the Home Screen > Launch placement assistant > OK! Let's do this > you can watch the video if it will help, then “skip video” which will launch the placement assistant > enter your address or share location (if you use “share location” and your address shows up then you are assured to be connected to the network). It will take 30-45 seconds to confirm your location.  Use the “Camera” mode for a direct visual of where your cell tower is located to where your gateway is located in your home. Try to make sure your gateway is located in a high point of your home and clear of any obstructions. Here is a helpful video: 

    

2. What are your metrics - now that you are confident your gateway is located in the best possible location, your metrics will show the quality of your connection. In your T-Mobile Internet app > tap “MORE” at the bottom of the Home Screen > tap “Advanced cellular metrics” > tap “5G” > and let us know your RSRQ, RSRP, SINR and which band you are connected to. You should be on band n41 or n71. Look at the chart posted above in this thread for. the ideal readings. to get the best readings, slightly rotate your gateway about 1/8th of a turn and then check the metrics to see if they change for the better. Repeat until you get the best metrics.  

Let us know the results. I hope this helps. 

I am new to t mobile as well and experiencing the same issue. Slow down isn't even the correct term for it. Took 4 hours not not even see a half hour episode! Reset the device so mant times my head hurts and I live within sight distance of a tower. I left a service that wasn't fantastic but so much better than this and not able to get that plan back as it is no longer available. T mobile needs to step it up quickly or ditch the false advertising thst is currently being used! So frustrating and disappointing!!! 

@ECMP it is helpful to have your gateway metrics and an understanding of your location. Are you located near a freeway? If so, the morning and evening commute traffic will impact your signal (download/upload speeds) as T-mobile prioritizes cellular traffic over home internet traffic. For example, I am near a freeway and my speeds drop to about 90-110 Mbps down during commute hours and rise to 150-250 Mbps at night with less traffic. 

Using your T-Mobile Internet app, tap the “MORE” link at the bottom of the screen, then Advanced cellular metrics, then 5G. What are your RSRP, RSRQ, and SINR metrics? Which band are you connected to (n41 or n71)? 

See the chart below for interpreting the metrics.

Been having the same exact issue. Every night it slows down significantly. There is no change in placement that improves the situation. Any desire to solve this problem TMobile? 

He is not the only one only mine hits at midnight. I'm not getting anywhere near his speeds during the daytime I usually average between 90 and 125 and for download it's about 35. After midnight it will drop down to 8 to 30, and for download believe it or not I will still get 35. It's something that T-Mobile is doing on its end it's not something that the customers are doing on their end. I'm about to go back to the chord just for the consistency. I am literally resetting my modem three to four times every night. It is good for about 20 minutes and then right back down to nothing and I am one below full bars as far as signal strength to the 5G Tower... Don't have that problem with my phone's hotspot if I decide to use that so it's not a signal to the tower issue it's a hardware issue or a network tower downgrade to conserve on money or power after peak hours. I know it's hella frustrating though.

@MAUI671 it sounds like you have done plenty of problem solving (like many of us have). In your case I would be pestering (I mean communicating) with customer service. Your numbers are very unusual. 

Because home internet is a degregraded service (mobile phone users have priority), the more cellphone users, the slower the speeds for home internet users. 

I am curious, what are your SINR, RSRQ, & RSRP metrics during the day compared to 8pm. I wonder if your SINR drops to 5 or so, which would mean there are numerous other signals interfering with your cell tower 5G signal. 

Curious.