diff --git a/.gitignore b/.gitignore
index 0d09c34e4..6c59afd3c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,4 +8,8 @@ x86/
 build/
 bld/
 [Bb]in/
-[Oo]bj/
\ No newline at end of file
+[Oo]bj/
+
+#performance reports & sessions
+*.vsp
+*.psess
\ No newline at end of file
diff --git a/Performance1.psess b/Performance1.psess
deleted file mode 100644
index 7dc9d392d..000000000
--- a/Performance1.psess
+++ /dev/null
@@ -1,21 +0,0 @@
-<VSPerformanceSession Version="1.00">
-  <Options>
-    <CollectionMethod>Sampling</CollectionMethod>
-    <AllocationMethod>None</AllocationMethod>
-    <AddReport>true</AddReport>
-    <UniqueReport>Timestamp</UniqueReport>
-    <SamplingMethod>Cycles</SamplingMethod>
-    <CycleCount>10000000</CycleCount>
-    <PageFaultCount>10</PageFaultCount>
-    <SysCallCount>10</SysCallCount>
-    <SamplingCounter PlatformID="00000000" CounterID="0000000000000000" ReloadValue="000000000000000a" />
-    <RelocateBinaries>false</RelocateBinaries>
-    <HardwareCounters EnableHWCounters="false" />
-  </Options>
-  <PreinstrumentEvent>
-    <InstrEventExclude>false</InstrEventExclude>
-  </PreinstrumentEvent>
-  <PostinstrumentEvent>
-    <InstrEventExclude>false</InstrEventExclude>
-  </PostinstrumentEvent>
-</VSPerformanceSession>
diff --git a/Subsurface.psess b/Subsurface.psess
deleted file mode 100644
index 84dfb636d..000000000
--- a/Subsurface.psess
+++ /dev/null
@@ -1,80 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<VSPerformanceSession Version="1.00">
-  <Options>
-    <Solution>Subsurface_Solution.sln</Solution>
-    <CollectionMethod>Sampling</CollectionMethod>
-    <AllocationMethod>None</AllocationMethod>
-    <AddReport>true</AddReport>
-    <ResourceBasedAnalysisSelected>true</ResourceBasedAnalysisSelected>
-    <UniqueReport>Timestamp</UniqueReport>
-    <SamplingMethod>Cycles</SamplingMethod>
-    <CycleCount>10000000</CycleCount>
-    <PageFaultCount>10</PageFaultCount>
-    <SysCallCount>10</SysCallCount>
-    <SamplingCounter Name="" ReloadValue="00000000000f4240" DisplayName="" />
-    <RelocateBinaries>false</RelocateBinaries>
-    <HardwareCounters EnableHWCounters="false" />
-    <EtwSettings />
-    <PdhSettings>
-      <PdhCountersEnabled>false</PdhCountersEnabled>
-      <PdhCountersRate>500</PdhCountersRate>
-      <PdhCounters>
-        <PdhCounter>\Fyysinen levy(_Total)\Levyjonon keskiarvo</PdhCounter>
-        <PdhCounter>\Muisti\Sivua/s</PdhCounter>
-        <PdhCounter>\Suoritin(_Total)\Suoritinaika prosentteina</PdhCounter>
-      </PdhCounters>
-    </PdhSettings>
-  </Options>
-  <ExcludeSmallFuncs>true</ExcludeSmallFuncs>
-  <InteractionProfilingEnabled>false</InteractionProfilingEnabled>
-  <JScriptProfilingEnabled>false</JScriptProfilingEnabled>
-  <PreinstrumentEvent>
-    <InstrEventExclude>false</InstrEventExclude>
-  </PreinstrumentEvent>
-  <PostinstrumentEvent>
-    <InstrEventExclude>false</InstrEventExclude>
-  </PostinstrumentEvent>
-  <Binaries>
-    <ProjBinary>
-      <Path>Subsurface\obj\x86\Debug\Subsurface.exe</Path>
-      <ArgumentTimestamp>01/01/0001 00:00:00</ArgumentTimestamp>
-      <Instrument>true</Instrument>
-      <Sample>true</Sample>
-      <ExternalWebsite>false</ExternalWebsite>
-      <InteractionProfilingEnabled>false</InteractionProfilingEnabled>
-      <IsLocalJavascript>false</IsLocalJavascript>
-      <IsWindowsStoreApp>false</IsWindowsStoreApp>
-      <IsWWA>false</IsWWA>
-      <LaunchProject>true</LaunchProject>
-      <OverrideProjectSettings>false</OverrideProjectSettings>
-      <LaunchMethod>Executable</LaunchMethod>
-      <ExecutablePath>Subsurface\bin\Windows\Debug\Subsurface.exe</ExecutablePath>
-      <StartupDirectory>Subsurface\bin\Windows\Debug\</StartupDirectory>
-      <Arguments>
-      </Arguments>
-      <NetAppHost>IIS</NetAppHost>
-      <NetBrowser>InternetExplorer</NetBrowser>
-      <ExcludeSmallFuncs>true</ExcludeSmallFuncs>
-      <JScriptProfilingEnabled>false</JScriptProfilingEnabled>
-      <PreinstrumentEvent>
-        <InstrEventExclude>false</InstrEventExclude>
-      </PreinstrumentEvent>
-      <PostinstrumentEvent>
-        <InstrEventExclude>false</InstrEventExclude>
-      </PostinstrumentEvent>
-      <ProjRef>{008C0F83-E914-4966-9135-EA885059EDD8}|Subsurface\Subsurface.csproj</ProjRef>
-      <ProjPath>Subsurface\Subsurface.csproj</ProjPath>
-      <ProjName>Subsurface</ProjName>
-    </ProjBinary>
-  </Binaries>
-  <Reports>
-    <Report>
-      <Path>Subsurface150526.vsp</Path>
-    </Report>
-  </Reports>
-  <Launches>
-    <ProjBinary>
-      <Path>:PB:{008C0F83-E914-4966-9135-EA885059EDD8}|Subsurface\Subsurface.csproj</Path>
-    </ProjBinary>
-  </Launches>
-</VSPerformanceSession>
\ No newline at end of file
diff --git a/Subsurface150526.vsp b/Subsurface150526.vsp
deleted file mode 100644
index 1c4abd5ce..000000000
Binary files a/Subsurface150526.vsp and /dev/null differ