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When running a game which streams video off the DVD image, using an ISO image results in frame time spikes. I have seen this in all of the Taiko games, and also Persona 4 and Lucky Star. I haven't tested others.
Compressing the same game ISO to a CHD and running the CHD instead results in the video playing back normally, without frame time spikes.
These spikes are significant enough to disrupt smooth video playback, though it's hard to see in the screen captures below - look at the frame times in the top right.
Describe the Bug
When running a game which streams video off the DVD image, using an ISO image results in frame time spikes. I have seen this in all of the Taiko games, and also Persona 4 and Lucky Star. I haven't tested others.
Compressing the same game ISO to a CHD and running the CHD instead results in the video playing back normally, without frame time spikes.
These spikes are significant enough to disrupt smooth video playback, though it's hard to see in the screen captures below - look at the frame times in the top right.
Taiko 1, from an ISO:
https://github.com/PCSX2/pcsx2/assets/136824455/5d2e9a6e-7954-4bca-a9fb-63abf943d8a9
Taiko 1, from a CHD:
https://github.com/PCSX2/pcsx2/assets/136824455/6a09c845-dac4-40aa-a1af-54eb51996b3c
Reproduction Steps
chdman.exe createcd -i game.iso -o game.chd
)Expected Behavior
Video playback from ISO images should be smooth.
PCSX2 Revision
1.7.5793
Operating System
Windows 11
If Linux - Specify Distro
No response
Logs & Dumps
No response
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