Not had this problem on my ES, which is relatively a new car.
But on my previous car a Nissan Qashqui, I did find the runners difficult to move when I bought it new, so got out my tub of thick grease and greased the runners and that sorted it.
Just pull the seats out as far as you can get it apply grease and slide back, and pull in and out a few times to spread the grease.