diff --git a/regamedll/build.gradle b/regamedll/build.gradle
index 2c3297ef..335b1288 100644
--- a/regamedll/build.gradle
+++ b/regamedll/build.gradle
@@ -120,6 +120,9 @@ void setupToolchain(NativeBinarySpec b)
 			cfg.compilerOptions.floatingPointModel = FloatingPointModel.PRECISE
 			cfg.compilerOptions.enhancedInstructionsSet = EnhancedInstructionsSet.DISABLED
 		}
+		else {
+			cfg.compilerOptions.args '/Oi', '/GF', '/GS-'
+		}
 
 		if (mpLib)
 		{
diff --git a/regamedll/dlls/vector.h b/regamedll/dlls/vector.h
index 3b24df99..12f71b00 100644
--- a/regamedll/dlls/vector.h
+++ b/regamedll/dlls/vector.h
@@ -36,12 +36,9 @@ class Vector2D
 {
 public:
 	vec_t x, y;
-	Vector2D() : x(0.0), y(0.0) {}
-	Vector2D(float X, float Y) : x(0.0), y(0.0)
-	{
-		x = X;
-		y = Y;
-	}
+	Vector2D() : x(), y() {}
+	Vector2D(float X, float Y) : x(X), y(Y) {}
+	Vector2D(const Vector2D &v) { *(int*)&x = *(int*)&v.x; *(int*)&y = *(int*)&v.y; }
 	Vector2D operator+(const Vector2D &v) const
 	{
 		return Vector2D(x + v.x, y + v.y);
@@ -151,25 +148,10 @@ class Vector
 {
 public:
 	vec_t x, y, z;
-	Vector() : x(0.0), y(0.0), z(0.0) {}
-	Vector(float X, float Y, float Z) : x(0.0), y(0.0), z(0.0)
-	{
-		x = X;
-		y = Y;
-		z = Z;
-	}
-	Vector(const Vector &v) : x(0.0), y(0.0), z(0.0)
-	{
-		x = v.x;
-		y = v.y;
-		z = v.z;
-	}
-	Vector(const float rgfl[3]) : x(0.0), y(0.0), z(0.0)
-	{
-		x = rgfl[0];
-		y = rgfl[1];
-		z = rgfl[2];
-	}
+	Vector() : x(), y(), z() {}
+	Vector(float X, float Y, float Z) : x(X), y(Y), z(Z) {}
+	Vector(const Vector &v) { *(int*)&x = *(int*)&v.x; *(int*)&y = *(int*)&v.y; *(int*)&z = *(int*)&v.z; }
+	Vector(const float rgfl[3]) { *(int*)&x = *(int*)&rgfl[0]; *(int*)&y = *(int*)&rgfl[1]; *(int*)&z = *(int*)&rgfl[2]; }
 	Vector operator-() const
 	{
 		return Vector(-x, -y, -z);
@@ -219,9 +201,9 @@ public:
 #endif // PLAY_GAMEDLL
 	void CopyToArray(float *rgfl) const
 	{
-		rgfl[0] = x;
-		rgfl[1] = y;
-		rgfl[2] = z;
+		*(int*)&rgfl[0] = *(int*)&x;
+		*(int*)&rgfl[1] = *(int*)&y;
+		*(int*)&rgfl[2] = *(int*)&z;
 	}
 	float_precision Length() const
 	{
@@ -244,7 +226,7 @@ public:
 		return &x;
 	}
 #ifndef PLAY_GAMEDLL
-	Vector Normalize()
+	Vector Normalize() const
 	{
 		float flLen = Length();
 		if (flLen == 0)
@@ -265,7 +247,7 @@ public:
 	}
 #endif // PLAY_GAMEDLL
 	// for out precision normalize
-	Vector NormalizePrecision()
+	Vector NormalizePrecision() const
 	{
 #ifndef PLAY_GAMEDLL
 		return Normalize();
@@ -281,8 +263,8 @@ public:
 	Vector2D Make2D() const
 	{
 		Vector2D Vec2;
-		Vec2.x = x;
-		Vec2.y = y;
+		*(int*)&Vec2.x = *(int*)&x;
+		*(int*)&Vec2.y = *(int*)&y;
 		return Vec2;
 	}
 	float_precision Length2D() const
diff --git a/regamedll/engine/common.h b/regamedll/engine/common.h
index 8254c3f1..68708e33 100644
--- a/regamedll/engine/common.h
+++ b/regamedll/engine/common.h
@@ -79,6 +79,21 @@ typedef struct incomingtransfer_s
 #define _strlwr(p) for (int i = 0; p[i] != 0; i++) p[i] = tolower(p[i]);
 #endif // _WIN32
 
+inline double M_sqrt(int value) {
+	return sqrt(value);
+}
+
+inline float M_sqrt(float value) {
+	return _mm_cvtss_f32(_mm_sqrt_ss(_mm_load_ss(&value)));
+}
+
+inline double M_sqrt(double value) {
+	double ret;
+	auto v = _mm_load_sd(&value);
+	_mm_store_sd(&ret, _mm_sqrt_sd(v, v));
+	return ret;
+}
+
 #define printf2 _printf2
 #define chatf _print_chat
 
@@ -139,4 +154,9 @@ typedef struct incomingtransfer_s
 #define Q_fprintf fprintf
 #define Q_fclose fclose
 
+#ifdef REGAMEDLL_FIXES
+#undef Q_sqrt
+#define Q_sqrt M_sqrt
+#endif
+
 #endif // COMMON_H