FIX: VPN not working with Asus router (5 tested solutions)
3 Ways To Fix ASUS Router Latency Issues - Internet Access Guide
Asus WiFi 6 VPN Merlin Firmware Setup - Flash My Router
Hardware issue found with some TP-Link WIFI 6 routers, including AX1500 that seems to be a popular router. Stuttering and Latency spikes, cannot be fixed with firmware. If you're having trouble with
Asus ROG Rapture GT-AXE11000 WiFi 6E Gaming Router Review: Fast but Finicky | Tom's Hardware