Weird issue in King's Field II, freeze processing on some areas

[Amjad50]

After starting new world, if you walk to the front for a bit until you see the gold coin, you will notice the FPS drops to 2 then continue normal, and keeps this sudden drop in FPS.

Looking at the profiler, the CPU (host) is not running at that time, meaning that there is some IO we are waiting for, either in the GPU or somewhere else.

Not sure what's in that area, but I suspect the GPU, maybe something to do with transparency for example.

[Amjad50]

This is because GPU is waiting for a long time, I think its because of some transparency suboptimal execution