So, i'm testing the so called "fiber" 15/1.5mbps recently installed here. The max bloat in upload was 4800ms in the first day; Some calls later and days of testing, last sunday there was a nice 50ms max upload.
Then came monday night, again 4xxxms, but also +200ms in download; Ok lests call again for the ISP to fix...
Two days later, ISP guy came with his laptop and then the bufferbloat test showed 700ms upload; Change (ethernet cable) to my laptop 4200ms, again his 600ms; !!!