diff --git a/.gitignore b/.gitignore
index e15b6bc7..c54beb33 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,11 +1,12 @@
-build/
-builddir/
-__pycache__/
-.vscode/
+build
+builddir
+__pycache__
+.vscode
 MangoHud*.tar.gz
-pkg/*
+pkg
 mangohud*.tar.*
 lib32-mangohud*.tar.*
+v*.tar.gz
 
 # Prerequisites
 *.d
diff --git a/README.md b/README.md
index 5d384ec0..e99b997c 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ If you are using Flatpaks, you will have to add the [Flathub repository](https:/
 
 ##### For Steam flatpak
 ```
-flatpak install com.valvesoftware.Steam.VulkanLayer.MangoHud
+flatpak install com.valvesoftware.Steam.Utility.MangoHud
 ```
 To enable MangoHud for all Steam games:
 ```
diff --git a/build-source.sh b/build-source.sh
new file mode 100755
index 00000000..e664d4a7
--- /dev/null
+++ b/build-source.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+VERSION=$(git describe --long --tags --always | sed 's/\([^-]*-g\)/r\1/;s/-/./g;s/^v//')
+
+EXCLUDE_PATTERN="--exclude-vcs --exclude-vcs-ignores"
+
+tar -cf v$VERSION.tar.gz $EXCLUDE_PATTERN .
+tar -cf v$VERSION-DFSG.tar.gz $EXCLUDE_PATTERN --exclude=include/nvml.h .
diff --git a/build.sh b/build.sh
index 3c74400e..6c4eaea2 100755
--- a/build.sh
+++ b/build.sh
@@ -217,7 +217,16 @@ usage() {
     else
         echo "$0 requires one argument"
     fi
-    echo 'Accepted arguments: "pull", "configure", "build", "package", "install", "clean", "uninstall".'
+    echo -e "\nUsage: $0 <command>\n"
+    echo "Available commands:"
+    echo -e "\tpull\t\tPull latest commits (code) from Git"
+    echo -e "\tconfigure\tEnsures that dependencies are installed, updates git submodules, and generates files needed for building MangoHud. This is automatically run by the build command"
+    echo -e "\tbuild\t\tIf needed runs configure and then builds (compiles) MangoHud"
+    echo -e "\tpackage\t\tRuns build if needed and then builds a tar package from MangoHud"
+    echo -e "\tinstall\t\tInstall MangoHud onto your system"
+    echo -e "\tclean\t\tRemoves build directory"
+    echo -e "\tuninstall\tRemoves installed MangoHud files from your system"
+    echo -e "\trelease\t\tBuilds a MangoHud release tar package"
 }
 
 for a in $@; do
diff --git a/meson.build b/meson.build
index 9dcf9ef6..1554c132 100644
--- a/meson.build
+++ b/meson.build
@@ -222,5 +222,11 @@ if cc.sizeof('void*') == 4
   pre_args += '-DMANGOHUD_ARCH="32bit"'
 endif
 
+if get_option('use_system_nvml')
+  cpp_nvml_args = '-DUSE_SYSTEM_NVML'
+else
+  cpp_nvml_args = []
+endif
+
 subdir('modules/ImGui')
 subdir('src')
diff --git a/meson_options.txt b/meson_options.txt
index 4de3b4f3..b9de6b83 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,5 +1,6 @@
 option('glibcxx_asserts', type : 'boolean', value : false)
 option('use_system_vulkan', type : 'feature', value : 'disabled', description: 'Use system vulkan headers instead of the provided ones')
+option('use_system_nvml', type : 'boolean', value : false, description : 'Use system nvml headers instead of the provided ones')
 option('mangohud_prefix', type : 'string', value : '', description: 'Add prefix to cross-compiled library, like "lib32-".')
 option('append_libdir_mangohud', type : 'boolean', value : true, description: 'Append "mangohud" to libdir path or not.')
 option('include_doc', type : 'boolean', value : true, description: 'Include the example config')
diff --git a/src/loaders/loader_nvml.h b/src/loaders/loader_nvml.h
index b42fd02c..c9fb7bae 100644
--- a/src/loaders/loader_nvml.h
+++ b/src/loaders/loader_nvml.h
@@ -4,7 +4,11 @@
 #ifndef LIBRARY_LOADER_NVML_H
 #define LIBRARY_LOADER_NVML_H
 
+#if USE_SYSTEM_NVML
+#include <nvml.h>
+#else
 #include "nvml.h"
+#endif
 #define LIBRARY_LOADER_NVML_H_DLOPEN
 
 #include <string>
diff --git a/src/logging.h b/src/logging.h
index da04f464..12329b2c 100644
--- a/src/logging.h
+++ b/src/logging.h
@@ -10,16 +10,16 @@ using namespace std;
 
 string os, cpu, gpu, ram, kernel, driver;
 bool sysInfoFetched = false;
-int gpuLoadLog = 0, cpuLoadLog = 0, log_period = 0;
+int gpuLoadLog = 0, cpuLoadLog = 0, log_period = 0, elapsedLog;
 
 struct logData{
   double fps;
-  double cpu;
-  double gpu;
-  double previous;
+  int cpu;
+  int gpu;
+  int previous;
 };
 
-double fps, elapsedLog;
+double fps;
 std::vector<logData> logArray;
 ofstream out;
 const char* log_period_env = std::getenv("LOG_PERIOD");
@@ -27,37 +27,43 @@ int num;
 bool loggingOn;
 uint64_t log_start;
 
-// void writeFile(string date){
-// 	out.open(mangohud_output_env + date, ios::out | ios::app);
+void writeFile(string filename){
+  out.open(filename, ios::out | ios::app);
 
-// 	for (size_t i = 0; i < logArray.size(); i++) {
-//      out << logArray[i].fps << "," << logArray[i].cpu  << "," << logArray[i].gpu << endl;
-//   }
-// 	out.close();
-// 	logArray.clear();
-// }
+  for (size_t i = 0; i < logArray.size(); i++)
+    out << logArray[i].fps << "," << logArray[i].cpu  << "," << logArray[i].gpu << "," << logArray[i].previous << endl;
+
+  out.close();
+  logArray.clear();
+}
 
 void *logging(void *params_void){
   overlay_params *params = reinterpret_cast<overlay_params *>(params_void);
   time_t now_log = time(0);
   tm *log_time = localtime(&now_log);
-	string date = to_string(log_time->tm_year + 1900) + "-" + to_string(1 + log_time->tm_mon) + "-" + to_string(log_time->tm_mday) + "_" + to_string(1 + log_time->tm_hour) + "-" + to_string(1 + log_time->tm_min) + "-" + to_string(1 + log_time->tm_sec);
+  string date = to_string(log_time->tm_year + 1900) + "-" +
+                to_string(1 + log_time->tm_mon) + "-" +
+                to_string(log_time->tm_mday) + "_" +
+                to_string(1 + log_time->tm_hour) + "-" +
+                to_string(1 + log_time->tm_min) + "-" +
+                to_string(1 + log_time->tm_sec);
   log_start = os_time_get();
   out.open(params->output_file + date, ios::out | ios::app);
   out << "os," << "cpu," << "gpu," << "ram," << "kernel," << "driver" << endl;
   out << os << "," << cpu << "," << gpu << "," << ram << "," << kernel << "," << driver << endl;
-	while (loggingOn){
+  out.close();
+
+  while (loggingOn){
     uint64_t now = os_time_get();
-    elapsedLog = (double)(now - log_start);
-    out << fps << "," << cpuLoadLog << "," << gpuLoadLog << "," <<  now - log_start << endl;
-		// logArray.push_back({fps, cpuLoadLog, gpuLoadLog, 0.0f});
+    elapsedLog = now - log_start;
+    logArray.push_back({fps, cpuLoadLog, gpuLoadLog, elapsedLog});
 
-    if ((elapsedLog) >= params->log_duration * 1000000 && params->log_duration)
+    if (params->log_duration && (elapsedLog) >= params->log_duration * 1000000)
       loggingOn = false;
-    
-    this_thread::sleep_for(chrono::milliseconds(log_period));
+    else
+      this_thread::sleep_for(chrono::milliseconds(log_period));
   }
-  // writeFile(date);
-  out.close();
+
+  writeFile(params->output_file + date);
   return NULL; 
-}
\ No newline at end of file
+}
diff --git a/src/meson.build b/src/meson.build
index 220c29b7..7a997e3f 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -117,6 +117,7 @@ vklayer_mesa_overlay = shared_library(
   cpp_args : [
     pre_args,
     cpp_vis_args, 
+    cpp_nvml_args,
     vulkan_wsi_args
     ],
   dependencies : [