Been working on my casting....no fishing to do here....

I seem to have hit a wall at about 60+ feet..[with 5wt and 6wt rods]...[WF lines]....I think I can throw a good loop...[not always consistently]...and I think the double haul is not too bad but I suppose could be better.

Is there such a thing as "hitting the wall" in fly casting....where everything has to be almost perfect to gain more distance?

I see these videos where 90ft of line is shot seemingly effortlessly....a thing of beauty

Unfortunately there's no one around here that can help me...it's getting frustrating...

I enjoy casting for casting's sake so we don't need to get into all the stuff about where to catch fish... and yes accuracy is part of casting...etc.

Anyone have any suggestions .... I feel like I'm just wasting time.