Water Blur in UE4.27 Game "Soulmask"

[shu307]

I've encountered an water blur issue while using OptiScaler in the UE4.27 game "Soulmask".
OptiScaler 0.7.7 Pre13 - 0719.
This issue persists regardless of which upscaler I use (XeSS, FSR 3, or FSR 2).

Since I don't have an Nvidia graphics card, I can only provide a comparison with native resolution rendering.
As you can see, the textures beneath the water surface are very blurry. Is there any way to improve this, or do you need more information from me?

balance fsr4.0.1

native

Cropped balance fsr4.0.1

Cropped native