diff --git a/bsnes/emulator/emulator.hpp b/bsnes/emulator/emulator.hpp
index e1474fbb..d57c21d5 100644
--- a/bsnes/emulator/emulator.hpp
+++ b/bsnes/emulator/emulator.hpp
@@ -29,7 +29,7 @@ using namespace nall;
 
 namespace Emulator {
   static const string Name    = "bsnes";
-  static const string Version = "109.1";
+  static const string Version = "109.2";
   static const string Author  = "byuu";
   static const string License = "GPLv3";
   static const string Website = "https://byuu.org";
diff --git a/bsnes/target-bsnes/presentation/presentation.cpp b/bsnes/target-bsnes/presentation/presentation.cpp
index 4fcd6d41..5b426142 100644
--- a/bsnes/target-bsnes/presentation/presentation.cpp
+++ b/bsnes/target-bsnes/presentation/presentation.cpp
@@ -206,8 +206,8 @@ auto Presentation::create() -> void {
     .show();
   });
 
-  viewport.setFocusable();
-  viewport.setDroppable();
+  viewport.setFocusable(false);  //true would also capture Alt, which breaks keyboard menu navigation
+  viewport.setDroppable(true);
   viewport.onDrop([&](vector<string> locations) {
     if(!locations) return;
     program.gameQueue = {};
diff --git a/bsnes/target-bsnes/settings/enhancements.cpp b/bsnes/target-bsnes/settings/enhancements.cpp
index e34016b0..7904c834 100644
--- a/bsnes/target-bsnes/settings/enhancements.cpp
+++ b/bsnes/target-bsnes/settings/enhancements.cpp
@@ -62,8 +62,7 @@ auto EnhancementSettings::create() -> void {
   mode7Scale.append(ComboButtonItem().setText("1440p").setProperty("multiplier", 6));
   mode7Scale.append(ComboButtonItem().setText("1680p").setProperty("multiplier", 7));
   mode7Scale.append(ComboButtonItem().setText("1920p").setProperty("multiplier", 8));
-  mode7Scale.append(ComboButtonItem().setText("2160p").setProperty("multiplier", 9));
-  for(uint n = 1; n <= 9; n++) {
+  for(uint n = 1; n <= 8; n++) {
     if(settings.emulator.hack.ppu.mode7.scale == n) mode7Scale.item(n - 1).setSelected();
   }
   mode7Scale.onChange([&] {
diff --git a/bsnes/target-bsnes/settings/settings.cpp b/bsnes/target-bsnes/settings/settings.cpp
index e7651505..f5bfda84 100644
--- a/bsnes/target-bsnes/settings/settings.cpp
+++ b/bsnes/target-bsnes/settings/settings.cpp
@@ -35,9 +35,9 @@ auto Settings::save() -> void {
 auto Settings::process(bool load) -> void {
   if(load) {
     //initialize non-static default settings
-    video.driver = ruby::Video::optimalDriver();
-    audio.driver = ruby::Audio::optimalDriver();
-    input.driver = ruby::Input::optimalDriver();
+    video.driver = ruby::Video::safestDriver();
+    audio.driver = ruby::Audio::safestDriver();
+    input.driver = ruby::Input::safestDriver();
   }
 
   #define bind(type, path, name) \
diff --git a/bsnes/target-libretro/GNUmakefile b/bsnes/target-libretro/GNUmakefile
index 0d8b707c..4c4cf7fb 100644
--- a/bsnes/target-libretro/GNUmakefile
+++ b/bsnes/target-libretro/GNUmakefile
@@ -1,5 +1,5 @@
 name := libretro.so
-flags += -std=c++17 -fpermissive -Wno-narrowing -Wno-multichar -fopenmp -g -fPIC
+flags += -Wno-narrowing -Wno-multichar -fopenmp -g -fPIC
 
 objects := libretro $(objects)
 objects := $(patsubst %,obj/%.o,$(objects))
@@ -11,4 +11,6 @@ ifeq ($(platform),linux)
 	$(strip $(compiler) -o out/bsnes_libretro.so -shared $(objects) -Wl,--no-undefined -Wl,--version-script=target-libretro/link.T -Wl,-Bdynamic -lpthread -ldl -lgomp)
 else ifeq ($(platform),windows)
 	$(strip $(compiler) -o out/bsnes_libretro.dll -shared $(objects) -Wl,--no-undefined -Wl,--version-script=target-libretro/link.T -static-libgcc -static-libstdc++ -Wl,-Bstatic -lws2_32 -lpthread -lgomp -Wl,-Bdynamic)
+else ifeq ($(platform),macos)
+	$(strip $(compiler) -o out/bsnes_libretro.dylib -shared $(objects) -lpthread -ldl)
 endif
diff --git a/bsnes/target-libretro/program.cpp b/bsnes/target-libretro/program.cpp
index 8ad4a067..c07365c7 100644
--- a/bsnes/target-libretro/program.cpp
+++ b/bsnes/target-libretro/program.cpp
@@ -123,6 +123,29 @@ auto Program::open(uint id, string name, vfs::file::mode mode, bool required) ->
 auto Program::load() -> void {
 	emulator->unload();
 	emulator->load();
+
+	// per-game hack overrides
+	auto title = superFamicom.title;
+	auto region = superFamicom.region;
+
+	//relies on mid-scanline rendering techniques
+	if(title == "AIR STRIKE PATROL" || title == "DESERT FIGHTER") emulator->configure("Hacks/PPU/Fast", false);
+
+	//stage 2 uses pseudo-hires in a way that's not compatible with the scanline-based renderer
+	if(title == "SFC クレヨンシンチャン") emulator->configure("Hacks/PPU/Fast", false);
+
+	//relies on cycle-accurate writes to the echo buffer
+	if(title == "KOUSHIEN_2") emulator->configure("Hacks/DSP/Fast", false);
+
+	//will hang immediately
+	if(title == "RENDERING RANGER R2") emulator->configure("Hacks/DSP/Fast", false);
+
+	//will hang sometimes in the "Bach in Time" stage
+	if(title == "BUBSY II" && region == "PAL") emulator->configure("Hacks/DSP/Fast", false);
+
+	//fixes an errant scanline on the title screen due to writing to PPU registers too late
+	if(title == "ADVENTURES OF FRANKEN" && region == "PAL") emulator->configure("Hacks/PPU/RenderCycle", 32);
+
 	emulator->power();
 }
 
diff --git a/ruby/GNUmakefile b/ruby/GNUmakefile
index eaafbdac..e422014a 100755
--- a/ruby/GNUmakefile
+++ b/ruby/GNUmakefile
@@ -1,7 +1,7 @@
 ifeq ($(ruby),)
   ifeq ($(platform),windows)
     ruby += video.wgl video.direct3d video.directdraw video.gdi
-    ruby += audio.asio audio.wasapi audio.xaudio2 audio.directsound audio.waveout
+    ruby += audio.wasapi audio.xaudio2 audio.directsound audio.waveout #audio.alsa
     ruby += input.windows
   else ifeq ($(platform),macos)
     ruby += video.cgl