I've had every issue you describe with lines other than Rio. I've used enough lines to find that these issues can happen with them all. Rio, SA, Orvis, Cortland. All of em.
I've had SA lines crack.
I've had an Orvis line break.
I've had Cortland lines peel apart.
But I've also had several of each that performed and held up as well as can be expected.
I can't think of a Rio line that I've had much trouble with. Several Selective Trout lines, a Rio gold, some old windcutters, etc.
All of them were fine.
Likewise, Rio tippet has been my go-to material for ages. SA is a close second. but before that I used Orvis and Cortland for years because that was what was easily available.
Again, all were perfectly fine.