I have been testing various 7th+ gen emulators. It is all so tiresome.
Rpcs3: Regression the emulator. It is impossible to tell what will they screw up in a week. Having to hunt down random builds in hope the specific game worked as before is tiresome. And this ain't the usual accuracy regressions,they are completely random.
From killzone water to bullets graphics being weird to ratchet games working and the just crashing at random spots, it is not a fun experience. The wiki is practically useless because of the constant regressions.
Vita3k: Development is blitzing along and vulkan being added is great. Problem though, around half of the library is problematic to play.And this is the actual good stuff like demon gaze and future wars. That is not a small problem. If the team can continue at this pace it could become great. But i don't see it since they already added Vulkan and optimized shaer compilations. Maybe in 4 years they will surprise me and jump up the compatibility significantly.
Xenia: Ah, Xenia. Every single issue mentioned above combined in one emulator. There is always gonna be something wrong when emulating on xenia.
Add to this no real compatibility lists minus walls of texts on github. You need the xenia manager though, do not even attempt to emulate without it.
Ryujinx: It can run stuff pretty well and the majority of the library is presumed playable. Here is the problem though, that word presumed.
Pokemon works, minus some features not working. Valkyria chronicles works, minus cutscene problems. Atelier works, minus specific enemies causing slowdowns that won't go away. You see, without a proper compatibility list, it is all just presumed to work until it doesn't. Lightning issues are cute, having a hard crash in a mario game when you are attempting to save is not. Probably the best of the bunch still when it comes to playable games.
Citra: It is pretty good, feels weird saying this. I pissed on this emulator a lot in the past but, now i see how much of the games actually work. Minus specific games not booting the majority of the problems will be in slowdowns. I remember kingdom hearts not booting and now it runs. They also seem to have fixed the issues with devil survivor. And majority of the issues is just underclocking the cpu to some value. Is it perfect, no, but it's above the rest minus ryjujinx.
Special mention to XEMU, the xbox emulator. "Does your emulator have issues with presenting the majority of the library as in game and not perfect or playable?" Well, just change the definition of playable to anything that actually boots. Problem solved." When you list a game a splayable and yet you list over 20+ open issues(including crashes), that game is not playable.