There’s also an issue that ASUS puts out some really bad firmware updates for routers. Never know when you will have a bad update for a long while. Often too, firmware updates have issues where a factory reset is needed and full clean setup without importing previous config. It doesn’t really surprise me that you have connection issues lol.
Some other things are potentially possible depending on things. But, normally you should not be having connection issues at all.
Examples:
ASUS RT-AC88U Firmware version 3.0.0.4.384.21045
Version 3.0.0.4.384.21045
45.9 MB
**2018/06/01**
- Modified the EULA for DDNS, AiProtection, Adaptive QoS, Traffic Analyzer, Web history, Feedback.
- Add Privacy page in Advanced settings
**- Fixed IPv6 bugs**
ASUS RT-AC88U Firmware version 3.0.0.4.384.32799
Version 3.0.0.4.384.32799
45.36 MB
**2018/09/20**
**Fixed WIFI stability issue.**
ASUS RT-AC88U Firmware version 3.0.0.4.385.20490
Version 3.0.0.4.385.20490
38.16 MB
**2020/04/28**
**- Improved connection stability.**
- Optimized CPU utilization.
**- Fixed firmware upgrade bugs.** ..........lol as if.
ASUS RT-AC88U Firmware version 3.0.0.4.386.43129
Version 3.0.0.4.386.43129
40.61 MB
**2021/05/18**
1.Fixed the FragAttack vulnerability.
2.Fixed DoS vulnerability. Thanks for Tsinghua University NISL's contribution.
**3.Improved system stability.**
4.Fixed GUI bugs.
ASUS RT-AC88U Firmware version 3.0.0.4.386.46065
Version 3.0.0.4.386.46065
41.33 MB
**2022/01/25**
..
**Fixed WAN connection bug.**
So you never know if even the latest firmware is having problems and then put out another firmware later with fixes to things causing connection problems after dealing with them for a while.
I’d like to throw out my current ASUS but only just bought it “recently” but then I only use it as an AP and its not being used in router mode and I have an alternate AP.
Also, using the internal automatic reboot once per week can help in certain situations too.
Still, you’re stating ASUS router and connection issues can very well be where the problem is due to ASUS firmware quality. Not the two best things to be stating together.