fusion 360 rendering quality never good enough

[berlinfreiheit]

hello, i am student and i want to print out my renderring in A0 but the qualitiy is good but when i zoom in just a bit i already see pixels and the file is never bigger then 900kb- 2 mb what can i do?

export  settings:   customs 8.5 x 11   in tiff format ... render qualiti  slider all to the right

on youtube they say its the maxium qualiti but i think it cant be  because my canon camera shoots  40megapixel

and i can zoom in so mutch and print  3 meter prints without seeing any pixels ...

[berlinfreiheit]

hello?