diff --git a/.appveyor.yml b/.appveyor.yml
index 508746db6..608f8d0fc 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,5 +1,11 @@
 version: "{build}"
 
+branches:
+  except:
+    - /^travis.*$/
+
+clone_depth: 1
+
 os: Visual Studio 2015
 
 platform: 
@@ -10,12 +16,37 @@ configuration:
   - Debug
   - Release
 
+cache:
+  - ci_deps_win_v01.zip
+
+environment:
+  # Update dependencies here: https://github.com/coelckers/gzdoom/releases/tag/ci_deps
+  DEPS_URL: https://github.com/coelckers/gzdoom/releases/download/ci_deps/
+  DEPS_FILENAME: ci_deps_win_v01.zip
+
+install:
+  - if not exist "%DEPS_FILENAME%"
+    appveyor DownloadFile "%DEPS_URL%%DEPS_FILENAME%"
+  - 7z x -y "%DEPS_FILENAME%"
+
 before_build:
-  - cmd: md build
-  - cmd: cd build
-  - cmd: if "%platform%"=="Win32" set CMAKE_GENERATOR_NAME=Visual Studio 14 2015
-  - cmd: if "%platform%"=="x64"   set CMAKE_GENERATOR_NAME=Visual Studio 14 2015 Win64
-  - cmd: cmake -G "%CMAKE_GENERATOR_NAME%" -DCMAKE_BUILD_TYPE=%configuration% ..
+  - md build
+  - cd build
+  - if "%PLATFORM%"=="Win32" set CMAKE_GENERATOR_NAME=Visual Studio 14 2015
+  - if "%PLATFORM%"=="x64"   set CMAKE_GENERATOR_NAME=Visual Studio 14 2015 Win64
+  - set DEPS_INCLUDE_DIR=%APPVEYOR_BUILD_FOLDER%\ci_deps_win\include
+  - set DEPS_LIB_DIR=%APPVEYOR_BUILD_FOLDER%\ci_deps_win\lib\%PLATFORM%
+  - cmake -G "%CMAKE_GENERATOR_NAME%" -T "v140_xp"
+    -DCMAKE_BUILD_TYPE="%CONFIGURATION%"
+    -DFMOD_INCLUDE_DIR="%DEPS_INCLUDE_DIR%"
+    -DFMOD_LIBRARY="%DEPS_LIB_DIR%\fmodex.lib"
+    -DOPENAL_INCLUDE_DIR="%DEPS_INCLUDE_DIR%"
+    -DOPENAL_LIBRARY="%DEPS_LIB_DIR%\OpenAL32.lib"
+    -DMPG123_INCLUDE_DIR="%DEPS_INCLUDE_DIR%"
+    -DMPG123_LIBRARIES="%DEPS_LIB_DIR%\libmpg123-0.lib"
+    -DSNDFILE_INCLUDE_DIR="%DEPS_INCLUDE_DIR%"
+    -DSNDFILE_LIBRARY="%DEPS_LIB_DIR%\libsndfile-1.lib"
+    ..
 
 build:
   project: build\GZDoom.sln
diff --git a/src/d_main.cpp b/src/d_main.cpp
index 73fb80bf6..44e9e565e 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -259,35 +259,6 @@ static int pagetic;
 //
 //==========================================================================
 
-// [ZZ] this handles the mouse changes in the playsim.
-//      I have no idea why it had to be done before events are dispatched... also no idea why is this not in G_Responder or something.
-static bool D_ProcessMouseForPlaysim(event_t *ev)
-{
-	//if (ev->type == EV_Mouse && !paused && menuactive == MENU_Off && ConsoleState != c_down && ConsoleState != c_falling && !E_CheckUiProcessors())
-	if (ev->type == EV_Mouse && !paused) // [ZZ] the other checks are replaced with responders eating the event.
-	{
-		if (Button_Mlook.bDown || freelook)
-		{
-			int look = int(ev->y * m_pitch * mouse_sensitivity * 16.0);
-			if (invertmouse)
-				look = -look;
-			G_AddViewPitch(look);
-			events[eventhead].y = 0;
-		}
-		if (!Button_Strafe.bDown && !lookstrafe)
-		{
-			G_AddViewAngle(int(ev->x * m_yaw * mouse_sensitivity * 8.0));
-			events[eventhead].x = 0;
-		}
-		if ((events[eventhead].x | events[eventhead].y) == 0)
-		{
-			return false;
-		}
-	}
-
-	return true;
-}
-
 void D_ProcessEvents (void)
 {
 	event_t *ev;
@@ -320,9 +291,7 @@ void D_ProcessEvents (void)
 		// check events
 		if (E_Responder(ev)) // [ZZ] ZScript ate the event
 			continue;
-		// before passing this further, do some magic
-		if (D_ProcessMouseForPlaysim(ev))
-			G_Responder (ev);
+		G_Responder (ev);
 	}
 }
 
@@ -342,6 +311,26 @@ void D_PostEvent (const event_t *ev)
 		return;
 	}
 	events[eventhead] = *ev;
+	if (ev->type == EV_Mouse && !paused && menuactive == MENU_Off && ConsoleState != c_down && ConsoleState != c_falling && !E_CheckUiProcessors())
+	{
+		if (Button_Mlook.bDown || freelook)
+		{
+			int look = int(ev->y * m_pitch * mouse_sensitivity * 16.0);
+			if (invertmouse)
+				look = -look;
+			G_AddViewPitch (look);
+			events[eventhead].y = 0;
+		}
+		if (!Button_Strafe.bDown && !lookstrafe)
+		{
+			G_AddViewAngle (int(ev->x * m_yaw * mouse_sensitivity * 8.0));
+			events[eventhead].x = 0;
+		}
+		if ((events[eventhead].x | events[eventhead].y) == 0)
+		{
+			return;
+		}
+	}
 	eventhead = (eventhead+1)&(MAXEVENTS-1);
 }