(Win10) Intense lag playing video

[jupiterbjy]

In Ace combat X, whatever your hardware or setting is, end up very choppy video playback at 33% speed.

Add this back to imgur link, sorry for that. This site block me using any form of image to be uploaded nor linked.
(I'm feeling so resentful about that, seriously for WHAT REASON?)

ClHQu09.png
WpYnVMM.png


Upper one is problem I'm encountering. it's all chopped up, not even smooth slow motion - While below one is using Hi-res replaced textures and running in 8x PSP resolution without even full loading GPU.

Originally I had no problem viewing intro cutscene until Mission 14, but now this is giving me headache. I can't withstand that sound.


However, one weird thing is noticed here:

EePJkqN.png
TDv4Kjx.png

As you see, lagging is happening when decoding video, with intense delay on Kernel itself too.
So when I save state, leave that lagging for while and reloading state - That part plays so smoothly as they are using cache.

That means PPSSPP is having issue decoding video for some reason. So I gave PPSSPP high priority on Task manager. Even putting ISO file in RAM or SSD it is keep happening. CPU(i5 3570) is still not using more than 30%. All IO option yield no difference.

Now, what I have to do to fix it?
I just skipped that video for now but it's important stories. Sorry if I don't reply soon, I may not be able to use pc for around 2 weeks.