This is hard to address without knowing more. Are the stickers the problem? Sometimes the stickers can transfer chemicals when drying a light colored wood after drying a dark colored wood. Are the stickers dry and kept dry between charges? Is the lumber dried as soon as possible after sawing? Were the logs fresh? Are there adequate airflow and depression to get the surface of the wood to dry as fast as possible without causing checking? There are probably other questions, but I would consider those items before changing stickers.
My understanding is that the dense, high-quality, hardwood stickers have good durability and over time will cost out. As far as sustainability, I would see ask if the wood has FSC or other certification.
Mike M.