Prints turn out wavy

[spcmky]

Can someone tell me whats happening here? Every largeish print I do does this. I have no idea why. I’m using Simplify3D. I’ve used default processes and I’ve tried to reset the printer.

[rxreyn3]

Is your printing table stable? It looks like the platform is slowly moving from underneath the head. Maybe try preheating the bed and heads before leveling and starting. Maybe the springs are bowing as it get warms?