diff --git a/core/emulator.cpp b/core/emulator.cpp
index 4d1c0d451..9a2eea659 100644
--- a/core/emulator.cpp
+++ b/core/emulator.cpp
@@ -101,7 +101,9 @@ static void loadSpecialSettings()
 				// Shenmue (EU)
 				|| prod_id == "MK-5105950"
 				// Shenmue (JP)
-				|| prod_id == "HDR-0016")
+				|| prod_id == "HDR-0016"
+				// Izumo
+				|| prod_id == "T46902M")
 		{
 			INFO_LOG(BOOT, "Enabling RTT Copy to VRAM for game %s", prod_id.c_str());
 			config::RenderToTextureBuffer.override(true);
diff --git a/core/rend/TexCache.cpp b/core/rend/TexCache.cpp
index 52dc491fd..df2b972ee 100644
--- a/core/rend/TexCache.cpp
+++ b/core/rend/TexCache.cpp
@@ -987,7 +987,7 @@ void WriteTextureToVRam(u32 width, u32 height, const u8 *data, u16 *dst, FB_W_CT
 			break;
 		case 3://0x3    1555 ARGB 16 bit    The alpha value is determined by comparison with the value of fb_alpha_threshold.
 			for (u32 c = 0; c < width; c++) {
-				*dst++ = (((p[Red] >> 3) & 0x1F) << 10) | (((p[Green] >> 3) & 0x1F) << 5) | ((p[Blue] >> 3) & 0x1F) | (p[Alpha] > fb_alpha_threshold ? 0x8000 : 0);
+				*dst++ = (((p[Red] >> 3) & 0x1F) << 10) | (((p[Green] >> 3) & 0x1F) << 5) | ((p[Blue] >> 3) & 0x1F) | (p[Alpha] >= fb_alpha_threshold ? 0x8000 : 0);
 				p += 4;
 			}
 			break;
@@ -1085,7 +1085,7 @@ void WriteFramebuffer(u32 width, u32 height, const u8 *data, u32 dstAddr, FB_W_C
 				pvr_write32p(dstAddr, (u16)((roundColor<5>(p[Red]) << 10)
 						| (roundColor<5>(p[Green]) << 5)
 						| roundColor<5>(p[Blue])
-						| (p[Alpha] > fb_alpha_threshold ? 0x8000 : 0)));
+						| (p[Alpha] >= fb_alpha_threshold ? 0x8000 : 0)));
 				p += 4;
 				dstAddr += bpp;
 			}