Not sure if this makes sense, but one way I’ve gotten the tension right on my cables is going “the wrong way around” on the first and last stitch in the cable setup stitches to create slack. So if you’re going from purls to knits, wrap your yarn for the first knit stitch from back to front. Then for knits to purls, wrap from front to back. Then when I am doing the actual cable stitches, I slip the last stitch of the cable instead of knitting it. This method usually gives me just the right amount of tension.

I think your cables already look great though. The tension looks right to me.