diff --git a/Changelog.md b/Changelog.md
index 08d1446e..de022818 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -13,6 +13,10 @@ Note: Numbers starting with a "#" like #330 refer to the bugreport with that num
 * Fix bugs on 64bit Big Endian platforms (#472, #625)
 * Fixes for high-poly models (use heap allocation instead of `alloca()` for big buffers; #528)
 * Fix building dhewm3ded with newer OpenAL Soft headers (#633)
+* Better support for High-DPI mice:
+  - Don't ignore mouse input on fast movement ("ridiculous mouse delta"), #616
+  - Allow setting sensitivity to values `< 1` in the dhewm3 settings menu to allow sane speeds
+    for looking around with High-DPI mice (otherwise it might be way too fast)
 * Fix a crash (assertion) on start with ImGui if `SDL_GetWindowDisplayIndex()`
   or `SDL_GetDisplayDPI()` failed and the `imgui_scale` CVar was set to the default value of `-1`
   (setting it to `1` worked around the bug; #632)
diff --git a/neo/framework/Dhewm3SettingsMenu.cpp b/neo/framework/Dhewm3SettingsMenu.cpp
index 189f2f63..425e732f 100644
--- a/neo/framework/Dhewm3SettingsMenu.cpp
+++ b/neo/framework/Dhewm3SettingsMenu.cpp
@@ -1546,7 +1546,7 @@ static void DrawOptions(CVarOption options[], int numOptions)
 static CVarOption controlOptions[] = {
 
 	CVarOption("Mouse Settings"),
-	CVarOption("sensitivity", "Sensitivity", OT_FLOAT, 1.0f, 30.0f),
+	CVarOption("sensitivity", "Sensitivity", OT_FLOAT, 0.01f, 30.0f),
 	CVarOption("m_smooth", "Smoothing Samples", OT_INT, 1, 8),
 	CVarOption("in_nograb", "Don't grab Mouse Cursor (for debugging/testing)", OT_BOOL),
 	CVarOption("m_invertLook", [](idCVar& cvar) {
diff --git a/neo/framework/UsercmdGen.cpp b/neo/framework/UsercmdGen.cpp
index 6d664e4c..c03340ea 100644
--- a/neo/framework/UsercmdGen.cpp
+++ b/neo/framework/UsercmdGen.cpp
@@ -677,8 +677,17 @@ void idUsercmdGenLocal::MouseMove( void ) {
 	historyCounter++;
 
 	if ( idMath::Fabs( mx ) > 1000 || idMath::Fabs( my ) > 1000 ) {
-		Sys_DebugPrintf( "idUsercmdGenLocal::MouseMove: Ignoring ridiculous mouse delta.\n" );
-		mx = my = 0;
+		// DG: This caused problems with High-DPI mice - there those values can legitimately happen.
+		//     If it turns out that spurious big values happen for other reasons, we'll
+		//     need a smarter check. Leaving the Sys_DebugPrintf() here to make detecting
+		//     those cases easier, but added a static bool so High DPI mice don't spam the log.
+		static bool warningShown = false;
+		if ( !warningShown ) {
+			warningShown = true;
+			Sys_DebugPrintf( "idUsercmdGenLocal::MouseMove: Detected ridiculous mouse delta (expected with High DPI mice, though!).\n" );
+		}
+
+		//mx = my = 0;
 	}
 
 	mx *= sensitivity.GetFloat();