Hi, I apologize for opening a new thread for this (simple) issue. I am having and issue with the default QOS settings in Toastman (but also shibby and advancedtomato) firmwares and I'm questioning whether I'm doing something wrong. When I enable the QOS and put a bandwidth limit of about 50% of my available bandwidth, I still see that speed tests (dslreports and ookla) are able to saturate the link to 100% on both upload and download speed. Same if I try at 5% of available bandwith. This makes me believe that either I'm doing something wrong or that there's an issue in QOS. I'm using the ARM build for a Netgear R6400 router. I'm no expert in linux tc but it looks like the limits are being applied to an intermediate dev (ifb0) and not directly on the wan device (vlan2). When the bandwidth limiter is enabled, a new qoslimit shell file is created in /tmp/etc/ which limits the bandwidth directly on the physical wan (vlan2). However, I can still max out my link (and have huge bufferbloat in the process). I'm short of ideas on what to try next (apart from studying the linux tc howto). Can you reproduce it ? Is it router specific ? Any hints?