The Valley of the Ancient demo was a slideshow on the Deck, while the Matrix Awakens City Sample demo with big cutbacks still operates mostly in in sub-20fps territory.Initial results were too good in that performance was actually rather impressive - and stacking up Steam Deck against Xbox Series S in a linked multiplayer game, the reasons became clear.On the one hand, using hardware RT when the consoles skip it is quite the feat, but on the other hand, there are reasons Epic chose to opt for the software solution - it's faster - and that option for faster performance wasn't available for me in my testing.We can get close to 30 frames per second on Deck - even using hardware RT - but the bad news is that we need use temporal super resolution in performance mode to do it, meaning that - astonishingly perhaps - we're actually upscaling from 360p.It looks like the settings I chose have a small detail deficit and I was interested to see that the hardware RT option presents a clearly RT-based lighting solution that still looks quite different to Series S. Even so, we're close to getting a decent 30fps experience on Steam Deck that in motion looks pretty close to the Series S experience - and I think there are clear routes forward in improving performance (software Lumen not working correctly being the big disappointment in my tests)."