In my experiment, (https://www.vlr.gg/378970/frags-or-posts) I found out that in a new account you need 10 upvotes for 1/3 star and thats a total of 120 upvotes for 4 stars. So if you make one post and 120 users upvote you, you will have 4 stars.
Now id except those 120 users if x number of users downvote your comment it wont matter. As long as you have 120 upvotes the net votes dont matter. So the only way to lose stars is by mods.
Also i have not yet calculated how no. of posts affect your stars, but thats an experiment for tomorrow, ending it with
Daily Quote of the day 5:
"Weak minds discuss people, Average minds debate ideas, Strong minds create ideas."