PikaOS maybe too “hobby oriented” to expect “sleep stability”, but I understand most/all bugs to be debian or kde upstream ones. Is gnome still much better at stability? Is there a distribution that fixed sleep problems for you? open vs closed nvidia drivers?
Are there motherboard manufacturers that suck less at linux?
It’s probably more to do with hardware than distro. That said, using major distros is more likely to win. FWIW I’ve used fedora and voidlinux on my 3 Dell laptops over the last 12 years with nary a problem. One of them had nvidia but I used nouveau.