I've heard conflicting stories about that, but it could be that in
PS4 compatibility mode they change the clockspeeds to that of the PS4 and don't allow access to the extra GPU power.
Not exact matches
Here, it's down to the platform holder to take ownership of
compatibility issues, but the advantage is this: unlike
PS4's boost
mode, Scorpio theoretically allows for the full power of the new console to be deployed on older games.
Following a series of leaks earlier in the year, a reveal event in September, and now Digital Foundry's extensive hands - on time and review of the
PS4 Pro, we know about its visual and performance upgrades as part of a dedicated «Pro»
mode for selected games, 4K and HDR output, and full
compatibility with existing
PS4 games and peripherals.