We've tested all three GTA titles now and it's clear that the situation isn't exactly optimal. In terms of the PS2 titles emulated on PlayStation 4, performance is the only applicable issue here, but it does make a tangible difference.
#GRAND THEFT AUTO SAN ANDREAS PS4 CODE#
The PAL territories were blighted with poorly adapted code that often featured letterboxing, slowdown or other artefacts in the transition from 60Hz to 50Hz. Obviously, for those of us in Europe, this is a somewhat disappointing state of affairs.
#GRAND THEFT AUTO SAN ANDREAS PS4 PS4#
And to conclude, we re-ran the original frame-rate test between PS2, PS3 and PS4 versions of the game, all using 60Hz code. We also cleaned up a short section of footage to confirm that the base frame-rate of San Andreas on our UK PSN code is indeed 25fps. We decided to produce a GTA San Andreas analysis highlighting the difference between our 'NTSC' and 'PAL' releases. This was originally a 60fps game in NTSC territories, running at 50fps on the PS4 emulator, then frame-blended back up to 60fps. Credit goes to commenter Malek86 for noting that his copy of Twisted Metal Black is definitely European code, albeit outputting at 60Hz - a situation we have also confirmed with Dark Cloud. We made an error in the original analysis below - GTA San Andreas under emulation does have some frame-pacing issues, but much of the judder we encountered is actually a result of the frame-blending, registering to our eyes (and our analysis tools) as unique frames when in fact they are simply the interpolated results of two images - we did think that it may be an artefact of the emulator working with PS2's original motion blur effect, but this is definitely not the case.
UPDATE 8/12/15 4:52pm: We've been looking at more PlayStation 2 titles running under emulation on PlayStation 4, and it now seems clear that all the UK code we've tested is running at 50Hz with a crude frame-blending 'upscale' to the 60Hz output.
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