Most high rated recipes are also from 2015/2016 using the exact percentage won’t work with newer gear, especially rda’s.
Try diluting a mix or mix at half that percentage and see if you get more out of it.
Sometimes it can be the exact opposite, some newer higher rated recipes might be mixed at too low of a percentage, then increasing it might work out.
As well as steep time as fidalgo pointed out does matter, and so does nic. strength. If you for example adapt a recipe mixed at 3% but you’re using it at 9+ then it needs changes etc.
Increasing your sweetener can help too, if you’re looking for that commercial level, but it will be hard on your coils, if that doesn’t matter to you, give that’s a chance.
It’s all speculation till we are actually seeing the recipe you’re referring too, unless it’s all of them.