Why would I recommend Fileflows? It was a little more user friendly in my experience without requiring pulling in configurations from other sources. I know there are repos chalk full of Tdarr settings and configs, but for simple setups and DIY I preferred the Fileflows interface. The end result is basically the same, so pick your poison.
I believe it’s more a “the PS3 CPU architecture was an absolute nightmare and emulating it is difficult/slow” more than it had anything to do with the graphics rendering portion- which is typically where phones would have made the most substantial advancements. There are specific instruction sets that need to be supported by any CPU emulating PS3 to run anywhere near native speed… And I don’t believe much work has been done for ARM cpu’s to support the needed instructions in mobile devices.