BIG problem with Persona 2

[Psykotik IV]

This particular problem occurs in 7 Sisters HS after I acquire the clock tower key. After that, the game freezes either during a battle swirl or 2-3 secondes after I engage in a battle. This, of course, has made it impossible to get to the clock tower.

Anyone have any suggestions? My specs are:

ePSXe V1.60

VIDEO:
Plugin: Pete's OpenGL Driver 1.1.74
Author: Pete Bernert
Card vendor: NVIDIA Corporation
GFX card: GeForce4 MX 440/AGP/SSE2

Resolution/Color:
- 640x480 Fullscreen - NO desktop changing [16 Bit]
- Keep psx aspect ratio: off

Textures:
- R8G8B8A8
- Filtering: 0
- Hi-Res textures: 0
- VRam size: 0 MBytes

Framerate:
- FPS limitation: on
- Frame skipping: on
- FPS limit: Auto

Compatibility:
- Offscreen drawing: 3
- Framebuffer texture: 2
- Framebuffer access: 4
- Alpha multipass: on
- Mask bit: on
- Advanced blending: on

Misc:
- Scanlines: off
- Line mode: off
- Unfiltered FB: off
- 15 bit FB: off
- Dithering: off
- Screen smoothing: on
- Screen cushion: off
- Game fixes: on [00011080]

SOUND:
Plugin: Eternal SPU Plugin Lite 1.41