diff --git a/res/scripts/components/mob.lua b/res/scripts/components/mob.lua
index 2266487d2..92c2a3723 100644
--- a/res/scripts/components/mob.lua
+++ b/res/scripts/components/mob.lua
@@ -20,7 +20,7 @@ end
 def_prop("jump_force", 0.0)
 def_prop("air_damping", 10.0)
 def_prop("ground_damping", 10.0)
-def_prop("movement_speed", 3.0)
+def_prop("movement_speed", 27.0)
 def_prop("run_speed_mul", 1.5)
 def_prop("crouch_speed_mul", 0.35)
 def_prop("flight_speed_mul", 2.0)
@@ -62,9 +62,8 @@ local function move_horizontal(speed, dir, vel)
         vec2.normalize(dir, dir)
 
         local delta = time.delta()
-        local damping = body:get_linear_damping()
-        vel[1] = vel[1] + dir[1] * speed * delta * damping
-        vel[3] = vel[3] + dir[2] * speed * delta * damping
+        vel[1] = vel[1] + dir[1] * speed * delta
+        vel[3] = vel[3] + dir[2] * speed * delta
     end
     body:set_vel(vel)
 end
diff --git a/res/scripts/components/player.lua b/res/scripts/components/player.lua
index 840bce743..49a03377f 100644
--- a/res/scripts/components/player.lua
+++ b/res/scripts/components/player.lua
@@ -49,9 +49,9 @@ local function process_player_inputs(pid, rot, delta)
 
     if mob.is_flight() then
         if isjump then
-            mob.move_vertical(speed * 3)
+            mob.move_vertical(speed / 4.0)
         elseif iscrouch then
-            mob.move_vertical(-speed * 3)
+            mob.move_vertical(-speed / 4.0)
         end
     elseif body:is_grounded() and isjump then
         mob.jump()
diff --git a/src/physics/PhysicsSolver.cpp b/src/physics/PhysicsSolver.cpp
index 6cf5ac62e..117136ea0 100644
--- a/src/physics/PhysicsSolver.cpp
+++ b/src/physics/PhysicsSolver.cpp
@@ -180,7 +180,6 @@ bool PhysicsSolver::calcCollisionNegY(
     if (vel.y >= 0.0f) {
         return false;
     }
-    hitbox.groundVelocity = {};
     for (int ix = 0; ix <= glm::ceil((half.x - E) * 2); ix++) {
         glm::vec3 coord;
         coord.x = (pos.x - half.x + E) + ix;
@@ -202,6 +201,7 @@ bool PhysicsSolver::calcCollisionNegY(
                     vel.y = -hitbox.elasticity * vel.y;
                     pos.y = newy;
                 }
+                hitbox.groundVelocity = {};
                 return true;
             }
         }
@@ -398,6 +398,10 @@ void PhysicsSolver::step(
     for (auto hitbox : hitboxes) {
         float linearDamping = hitbox->linearDamping;
 
+        if (hitbox->grounded) {
+            linearDamping = 10.0f; // TODO: add friction to material
+        }
+
         glm::vec3& vel = hitbox->velocity;
         auto diff = hitbox->groundVelocity - vel;
         vel.x += diff.x * delta * linearDamping;
@@ -407,7 +411,7 @@ void PhysicsSolver::step(
             vel.y /= 1.0f + delta * linearDamping * hitbox->verticalDamping;
         }
         if (!hitbox->grounded) {
-            hitbox->groundVelocity = {};
+            hitbox->groundVelocity *= 1.0f - delta;
         }
         
         updateSensors(*hitbox);
diff --git a/src/util/stringutil.cpp b/src/util/stringutil.cpp
index e1a99f9e0..0329305c3 100644
--- a/src/util/stringutil.cpp
+++ b/src/util/stringutil.cpp
@@ -7,6 +7,8 @@
 #include <sstream>
 #include <stdexcept>
 
+static std::locale locale("en_US.UTF-8");
+
 std::string util::escape(std::string_view s, bool escapeUnicode) {
     std::stringstream ss;
     ss << '"';
@@ -507,39 +509,34 @@ double util::parse_double(const std::string& str, size_t offset, size_t len) {
 
 std::wstring util::lower_case(const std::wstring& str) {
     std::wstring result = str;
-    static const std::locale loc("");
     for (uint i = 0; i < result.length(); i++) {
-        result[i] = static_cast<wchar_t>(std::tolower(str[i], loc));
+        result[i] = static_cast<wchar_t>(std::tolower(str[i], locale));
     }
     return result;
 }
 
 std::wstring util::upper_case(const std::wstring& str) {
     std::wstring result = str;
-    static const std::locale loc("");
     for (uint i = 0; i < result.length(); i++) {
-        result[i] = static_cast<wchar_t>(std::toupper(str[i], loc));
+        result[i] = static_cast<wchar_t>(std::toupper(str[i], locale));
     }
     return result;
 }
 
 std::wstring util::capitalized(const std::wstring& str) {
     if (str.empty()) return str;
-    static const std::locale loc("");
-    return std::wstring({static_cast<wchar_t>(std::toupper(str[0], loc))}) +
+    return std::wstring({static_cast<wchar_t>(std::toupper(str[0], locale))}) +
            str.substr(1);
 }
 
 std::string util::capitalized(const std::string& str) {
     if (str.empty()) return str;
-    static const std::locale loc("");
-    return std::string({static_cast<char>(std::toupper(str[0], loc))}) +
+    return std::string({static_cast<char>(std::toupper(str[0], locale))}) +
            str.substr(1);
 }
 
 std::wstring util::pascal_case(const std::wstring& str) {
     if (str.empty()) return str;
-    static const std::locale loc("");
     std::wstring result = str;
     bool upper = true;
     for (uint i = 0; i < result.length(); i++) {
@@ -547,7 +544,7 @@ std::wstring util::pascal_case(const std::wstring& str) {
         if (c <= ' ') {
             upper = true;
         } else if (upper) {
-            result[i] = static_cast<wchar_t>(std::toupper(str[i], loc));
+            result[i] = static_cast<wchar_t>(std::toupper(str[i], locale));
             upper = false;
         }
     }
diff --git a/test/util/stringutil.cpp b/test/util/stringutil.cpp
index 22df2b356..a057d4e69 100644
--- a/test/util/stringutil.cpp
+++ b/test/util/stringutil.cpp
@@ -101,3 +101,9 @@ TEST(stringutil, escape_cases) {
     }
     EXPECT_EQ(utf8str, restored);
 }
+
+TEST(stringutil, cases) {
+    EXPECT_EQ(util::upper_case(L"тест"), std::wstring(L"ТЕСТ"));
+    EXPECT_EQ(util::lower_case(L"ТЕСТ"), std::wstring(L"тест"));
+    EXPECT_EQ(util::pascal_case(L"тестовая строка"), std::wstring(L"Тестовая Строка"));
+}