And now you show 14.7/10 and 16.2/9.7; I could be wrong but that does not really look like a bufferbloat issue (unless you are mainly concerned about the bufferbloat rating of C).
BTW for the excellent dslreports speedtest it is better to link the actual result summary image that you get to once you click the "Resukts + Share" button...
https://forum.openwrt.org/t/sqm-qos-recommended-settings-for-the-dslreports-speedtest-bufferbloat-testing/2803/11 has some pointers for configuring the dslreports speedtest, just in case...