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?
I use Fedora with KDE and never have issues. Though I no longer have NVIDIA cards in any of my computers. The drivers suck on Linux in general and were the cause of many of my previous issues with Linux overall.