Help: How can I improve the tuning stability of my SBMM jp157?

As the title says, I’d like to improve the tuning stability of my SBMM JP157, which at the moment will drift out of tune by 10-15 cents after a minute or two of playing. The problem is, I don’t know if I’ve just set something up wrong or if there’s something special that I need to do to improve the stability. I’d like to have my trem be ‘supple’ (couldn’t think of a better word lol) but I can’t figure out how to get both that and good tuning stability.

Any advice would be greatly appreciated!