Probably, as PS4 uses a PC-like architecture and the Witcher games are mainly developed on PC, they are close to maxing out the CURRENT capabilities of PS4 HW/SW setup, but surely too, the current system SW doesn't max out HW capabilities yet: in the next years dev tools, standard libraries and drivers will be improved and refined, increasing the part of optimization that is out of game developers reach. It won't be fast, changes must be done gradually and carefully to avoid worsening stability, and there are some optimizations, like loop unrolling, where performances increase implies larger code size, so some trade-offs can become necessary.







