So think of it this way. If the VIX was around 20, options contract premiums would be less, so the required amount for the stock to move a certain percentage wouldn't be as great as when the VIX is 35., so if you're paying for a stock when volatility is high as well as a year out (time value) then the stock would have to move a tremendous amount for you to gain.
Here's the graph for a call option. Now if volatility increases and/or you pay for for time, that green horizontial line would shift further down and the broken black vertical line would be wider.