The only time I see condensation on my tubs is if they went to the bathroom. I think as long as the substrate isn't wet it's not a bad thing I suppose. I'd check your humidity though.
80 is higher then needed. I find with mine sheds r good at 60%. Also condensation id not always a bad thing. It simply means there is a temperature differentiation between inside and outside.. I struggled with this as well. And finally came to terma with it. I have mine at 55-60 amd still get some condensation on the outside exposed side of the tub.
condensation is as much a product of temperature differential. But 60% is fine I keep mine between 55-65% all the time I don't usually change it for sheds either. High humidity and poor airflow increase the risks of RI so I'd allow it to drop some. A humid hide solves the humidity issue with out too much work of effort.