2 problems with kingdom hearts...

[.....SEPHIROTH!]

I'm new on this forum and I've already seen other posts about this problems but i still have them:
1) - Kingdom hearts has little speedups and VERY long slowdowns, where the fps are from 29 to 7. I don't want very fast games, but i just want games with no slowdowns.
2) - The same game crashes when i get for the first time to traverse town.
It doesn't send me messages, I looked the fps, and them were at 2, and never change.
I've played another time at this game, but i still have this problem.
CPU: AMD Athlon II X2P340
Graphics: ATI Mobility Radeon HD 5470
RAM: 4 GB DDR
and I have pcsx2 1.00 (r5350) with EE/IOP and VU's settings on default.
Graphics plugin : Gsdx 5334 on direct3d 11 (Hardware)
Sound Plugin : SPU2-X r5324
CD Plugin : Cdvd Gigahertz (r4488)
I use the CD of the game and not the iso.
can someone help me?

[refraction]

what are your gsdx settings?

[.....SEPHIROTH!]

Direct3D 11 (Hardware)
Interlacing: None
Original Ps2 resolution : Native
Texture Filtering: Yes

[Dante3hs]

What are your EE, VU and GS % s during the slowdowns?

Also download imgburn and create an iso of your disc, and try running from the iso to see if you get any performance increase.

[.....SEPHIROTH!]

If i use an iso and not a cd i won't get any performance increase because i've already played another game with its iso, but i have the same problem.
I think that the most important problem in this post is the crash, because i didn't find any save file for this game.
I'll write what you asked to me tomorrow.

[jesalvein]

If i use an iso and not a cd i won't get any performance increase because i've already played another game with its iso, but i have the same problem.
I think that the most important problem in this post is the crash, because i didn't find any save file for this game.
I'll write what you asked to me tomorrow.

sure.
but making an iso may help avoiding read erors from your PS2 DVD.
Try what he suggested