diff --git a/CMakeLists.txt b/CMakeLists.txt
index 13af5a5..9ac8e25 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 CMAKE_MINIMUM_REQUIRED(VERSION 2.8.12)
 
-ADD_COMPILE_OPTIONS($<$<CXX_COMPILER_ID:MSVC>:/MP>)
+ADD_COMPILE_OPTIONS($<$<CXX_COMPILER_ID:MSVC>:/MP> $<$<CXX_COMPILER_ID:MSVC>:$<$<CONFIG:RELEASE>:/O2>> $<$<CXX_COMPILER_ID:MSVC>:$<$<CONFIG:RELWITHDEBINFO>:/O2>>)
 
 PROJECT(helper)
 
diff --git a/appveyor.yml b/appveyor.yml
index 49f6549..4ce6e71 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,6 @@
 version: 1.0.{build}
 skip_branch_with_pr: true
-image: Visual Studio 2017
+image: Visual Studio 2019 Preview
 environment:
   WEBHOOK_URL:
     secure: gOKbXaZM9ImtMD5XrYITvdyZUW/az082G9OIN1EC1Vbg57wBaeLhi49uGjxPw5GVujHku6kxN6ab89zhbS5GVeluR76GM83IbKV4Sh7udXzoYZZdg6YudtYHzdhCgUeiedpswbuczTq9ceIkkfSEWZuh/lMAAVVwvcGsJAnoPFw=
@@ -14,9 +14,9 @@ build_script:
 
     C:\Python37-x64\python.exe unimake.py -d c:\projects\modorganizer-build -s Appveyor_Build=True %APPVEYOR_PROJECT_NAME%
 artifacts:
-- path: vsbuild\src\RelWithDebInfo\helper.exe
+- path: build\src\helper.exe
   name: helper_exe
-- path: vsbuild\src\RelWithDebInfo\helper.pdb
+- path: build\src\helper.pdb
   name: helper_pdb
 on_success:
   - ps: Set-Location -Path $env:APPVEYOR_BUILD_FOLDER
@@ -24,5 +24,7 @@ on_success:
   - ps: ./send.ps1 success $env:WEBHOOK_URL
 on_failure:
   - ps: Set-Location -Path $env:APPVEYOR_BUILD_FOLDER
+  - ps: Push-AppveyorArtifact ${env:APPVEYOR_BUILD_FOLDER}\stdout.log
+  - ps: Push-AppveyorArtifact ${env:APPVEYOR_BUILD_FOLDER}\stderr.log
   - ps: Invoke-RestMethod https://raw.githubusercontent.com/DiscordHooks/appveyor-discord-webhook/master/send.ps1 -o send.ps1
   - ps: ./send.ps1 failure $env:WEBHOOK_URL
\ No newline at end of file