KamilN wrote:
I was riding ISM split nose and I couldn't find it comfortable, it was wide and causing pinching skin under trisuit pad.
Many people find the ISMs too wide. Both of the Cobb JOF saddles (55 and Randee) have narrower noses, as does the Fabric Tri or the Fizik Mystica (comes in different widths). There are others as well (DASH). So don't abandon the noseless saddle idea just because ISM didn't work. In the video it looks uncomfortable based on how far backward you're rotating your pelvis.
KamilN wrote:
Lower my seat more? Now it's 81cm with 91 inseam and in fitting report is written 84,5cm, but it was way to high.
It still looks high based on the movement of your back, but not ridiculously so. I'd guess a view from behind would show you're rocking. You pedal toes down, but that looks to be more stylistic than compensating for a too-high saddle. Did the fitter adjust your cleats back on the shoe as well? Anyway, you need a comfortable saddle before you really settle on a seat height, the way you rotate your pelvis affects seat height.
84.5 would have been ridiculous, if the fitter really thought that's where your seat should be, then I would not go back to him or her.