Poor performance of NR7102

Hi all! I ran into similar problems like you, having poor performance. First of all let me tell, that you really have to make sure that the antennas point exactly on the tower. I would not recommend the Zyxel Air app. You would prefer the interface of the router instead, because it gives you a 5 second readings renewal interval which is really convenient! I still cannot understand why the integrated WiFi module would not allow you to access WAN, because frankly speaking the in-app speedtest is really awful and you need to know the final result before completing the mast installation.

Anyways, after making sure you installed correctly there is nothing you can really do about it. Fiddling with the settings will give little result (for example messing with band/cell lock, CA, switching between LTE-A and 5G NSA). Better leave it as is. The performance will matter on ISP and daily traffic intensity. For example my speeds vary between 50mbps and 550mbps depending on the day of the week and the hour of the day. You may also notice that the SINR readings during late night and broad daylight vary a lot in urban environment. That says a lot in matter of performance.

I did multiple comparisons with my mobile device and after making sure I get the best possible readings for RSRQ, RSRP and SINR (even better than the phone) my speeds match 90% of the time those of the phone.

Unfortunately, this router is dead. The support is non-existent, and it hasn’t received any modem or firmware updates for almost a year, so we’re stuck with the issues—unlike its cousin, the NR7101, which gets updates every 2-3 months.

There is an update that fixes a critical CVE, but even though it has been published on Zyxel's support page, it hasn’t been released to users and we are stuck with critical security problems.

The CVE was publisher on December, Update was released almost immediatly for NR7101.

NR7102 update was advertised on article but never published and left its users with critical security issues despite being aware of the problem.

ZYXEL-CVE-ADVISORY

This device is a top-tier hardware with garbage-tier support. It’s clear that Zyxel is more interested in making money and sell as many routers as possible than in supporting and satisfying its customers.