Looks like I have to reply to my own question..
It looks like there is possibility to set resoultion in the Time Range Picker element :
But only before
attaching Trend element. After attaching, this option is not avaliable:
That's why I was struggling to find it earlier
So if your trend is showing some weird thing , set this option to microseconds and it should be fine.
(to be honest not sure why this option even exists as when set to ms time range picker is not working correctly)
Hope it will help someone