Valkyrie profile 2 pcsx2 settings

So I am playing vp2 on the emulator using the cheat patches included with the 4K textures, I am not using the textures tho. Many issues are fixed due to these patches, like the ghosting but others are introduced . The main one that is bothering me is that in battle the screen flickers dark for a second then reverts to normal. There also is lag at certain parts of the game and I know my pc is well above the specs needed to emulate it. Does anyone have definitive settings to run this game without issues or at least fix the black screen flicker , as it seems no matter what way I try to play this game there is always some kind of issue