Auto Columns Chrome

Hi! Thanks for the great plugin. I have one question concerning the amount the columns in chrome. The width and amount of columns stretches perfectly in all browsers but in Chrome at view 75% it shows only 3 columns instead of 4. This causes that there is empty space on the right side of the portfolio. If I change to 67% or 80% it shows 4 columns again at perfect width..
Thanks in advance!