I've flashed my MR3420 with openwrt two days ago. all went well, but the internet connection seems drops by half. while using stock firmware, I'm able to get download speed between 8 - 9 MB/s. Now seems I only can get between 4.xx MB/s or 5.xx MB/s if lucky. is there any settings that I missed? I followed your guide on first post.
if i revert to stock firmware, the connection seems back to normal. the only tweak i did was egress and ingress bandwidth set to 100000.

am using maxis unlimited plan.

so does my huawei E367 then, i guess.. can we set it to not forcing Auto Band?