RPCS3 FAQ

[Runo]

Actually this decision is not done twice most of the cases, since changing from one way to the other would usually require almost a complete rewrite of the core code. RPCS3 is HLE'ing the BIOS, so it will probably stay that way. Imho, the PS3 processors are too complex to LLE, and the emulation would be too hardware heavy. HLE is a much more modern way of emulating a system, tough it is harder to code.