diff --git a/.gitignore b/.gitignore
index 3fc1a75..eea0bdd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -38,6 +38,9 @@ x64/Debug/
 x64/Release/
 *.suo
 *.user
+*.opensdf
+*.sdf
+*.pdb
 
 .settings/
 .project
diff --git a/ccminer.vcxproj b/ccminer.vcxproj
index 7af1c0f..689b017 100644
--- a/ccminer.vcxproj
+++ b/ccminer.vcxproj
@@ -410,9 +410,10 @@ copy "$(CudaToolkitBinDir)\cudart64*.dll" "$(OutDir)"</Command>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">%(AdditionalOptions)</AdditionalOptions>
     </CudaCompile>
     <CudaCompile Include="quark\cuda_bmw512.cu">
+      <MaxRegCount>128</MaxRegCount>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">--ptxas-options=-O3 %(AdditionalOptions)</AdditionalOptions>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">%(AdditionalOptions)</AdditionalOptions>
-      <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">%(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">--ptxas-options=-O3 %(AdditionalOptions)</AdditionalOptions>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">%(AdditionalOptions)</AdditionalOptions>
     </CudaCompile>
     <CudaCompile Include="quark\cuda_jh512.cu">
@@ -480,10 +481,11 @@ copy "$(CudaToolkitBinDir)\cudart64*.dll" "$(OutDir)"</Command>
     <CudaCompile Include="x11\cuda_x11_echo.cu">
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">--ptxas-options=-O3 %(AdditionalOptions)</AdditionalOptions>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">%(AdditionalOptions)</AdditionalOptions>
-      <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">%(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">--ptxas-options=-O3 %(AdditionalOptions)</AdditionalOptions>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">%(AdditionalOptions)</AdditionalOptions>
     </CudaCompile>
     <CudaCompile Include="x11\cuda_x11_luffa512.cu">
+      <MaxRegCount>80</MaxRegCount>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">--ptxas-options=-O3 %(AdditionalOptions)</AdditionalOptions>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">%(AdditionalOptions)</AdditionalOptions>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">%(AdditionalOptions)</AdditionalOptions>
@@ -552,6 +554,12 @@ copy "$(CudaToolkitBinDir)\cudart64*.dll" "$(OutDir)"</Command>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">%(AdditionalOptions)</AdditionalOptions>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">%(AdditionalOptions)</AdditionalOptions>
     </CudaCompile>
+    <CudaCompile Include="x15\whirlcoin.cu">
+      <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">--ptxas-options=-O2 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">%(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|x64'">%(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">%(AdditionalOptions)</AdditionalOptions>
+    </CudaCompile>
     <CudaCompile Include="x15\x14.cu">
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">--ptxas-options=-O2 %(AdditionalOptions)</AdditionalOptions>
       <AdditionalOptions Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">%(AdditionalOptions)</AdditionalOptions>
@@ -569,4 +577,4 @@ copy "$(CudaToolkitBinDir)\cudart64*.dll" "$(OutDir)"</Command>
   <ImportGroup Label="ExtensionTargets">
     <Import Project="$(VCTargetsPath)\BuildCustomizations\CUDA 6.5.targets" />
   </ImportGroup>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/ccminer.vcxproj.filters b/ccminer.vcxproj.filters
index 1fe7358..6c480c5 100644
--- a/ccminer.vcxproj.filters
+++ b/ccminer.vcxproj.filters
@@ -400,5 +400,8 @@
     <CudaCompile Include="bitslice_transformations_quad.cu">
       <Filter>Source Files\CUDA</Filter>
     </CudaCompile>
+    <CudaCompile Include="x15\whirlcoin.cu">
+      <Filter>Source Files\CUDA\x15</Filter>
+    </CudaCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file