diff --git a/server/gameserver/buff/callfunc.cc b/server/gameserver/buff/callfunc.cc
index 45188240..a65095fc 100644
--- a/server/gameserver/buff/callfunc.cc
+++ b/server/gameserver/buff/callfunc.cc
@@ -524,6 +524,7 @@ void CallFuncBuff::ProcFlashMove()
             owner->SetPos(new_pos);
             App::Instance()->verify_set_pos = 0;
             owner->room->grid_service->MoveCreature(owner);
+            owner->SyncServerPos(1);
             if (owner->IsCar()) {
                 Car* car = owner->AsCar();
                 if (car->GetDriver()) {
@@ -611,13 +612,10 @@ void CallFuncBuff::ProcFlashMoveToPos()
     owner->GetMovement()->ClearPath();
 
     App::Instance()->verify_set_pos = 1;
-    if (owner->IsClientMove()) {
-        owner->GetMutablePos().FromGlmVec3(glm::vec3(x, y, z));
-    } else {
-        owner->GetMutablePos().FromGlmVec3(glm::vec3(x, y, z));
-    }
+    owner->GetMutablePos().FromGlmVec3(glm::vec3(x, y, z));
     App::Instance()->verify_set_pos = 0;
     owner->room->grid_service->MoveCreature(owner);
+    owner->SyncServerPos(1);
 #if 0
     owner->room->frame_event.AddPropChg(owner->GetWeakPtrRef(),
                                         kPropFlyTo,
diff --git a/server/gameserver/buff/sprint.cc b/server/gameserver/buff/sprint.cc
index 427cc0cf..b0d15e3f 100644
--- a/server/gameserver/buff/sprint.cc
+++ b/server/gameserver/buff/sprint.cc
@@ -16,6 +16,7 @@
 
 #include "mt/Buff.h"
 #include "mt/Skill.h"
+#include "mt/Param.h"
 #include "mt/SkillNumber.h"
 
 void SprintBuff::Activate()
@@ -44,6 +45,10 @@ void SprintBuff::SprintMove()
     owner->SetAttackDir(owner->context_dir);
     owner->SetDisableMoveDirTimes(old_times);
     owner->IncDisableMoveDirTimes();
+    if (owner->IsClientMove()) {
+        owner->GetMovement()->ClearPath();
+        owner->GetMovement()->CalcTargetPos(mt::Param::s().move_step_len);
+    }
 #ifdef MYDEBUG
     a8::XPrintf("%s\n",
                 {
diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index 6fac7b52..c5a3a24e 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -2694,20 +2694,32 @@ void Creature::UpdateMove()
     {
         Position old_pos = GetPos();
         if (GetMovement()->UpdatePosition()) {
+            if (HasBuffEffect(kBET_Sprint) && IsPlayer()) {
+                if (room->GetFrameNo() % 2 == 0) {
+                    SyncServerPos(1);
+                }
+            }
         } else {
+            if (HasBuffEffect(kBET_Sprint) && IsPlayer()) {
+                if (room->GetFrameNo() % 2 == 0) {
+                    SyncServerPos(1);
+                }
+            }
             if (!GetMovement()->IsFindPath()) {
                 if (room->GetGasData().GetGasMode() == GasInactive &&
                     room->IsSandTableRoom()) {
                 } else {
                     if (IsPlayer() || HasBuffEffect(kBET_Sprint)) {
+                        if (HasBuffEffect(kBET_Sprint)) {
+                            GetMovement()->CalcTargetPos(mt::Param::s().move_step_len);
+                        }
                         if (!GetMovement()->UpdatePosition()) {
                             if (HasBuffEffect(kBET_Sprint)) {
-                                GetMovement()->CalcTargetPos(mt::Param::s().move_step_len);
                                 SprintBuff* buff = (SprintBuff*)GetBuffByEffectId(kBET_Sprint);
                                 if (buff) {
                                     buff->SprintEnd();
                                 }
-                            } else if (IsPlayer() && !AsPlayer()->is_client_move) {
+                            } else if (IsPlayer() && !AsPlayer()->IsClientMove()) {
                                 GetMovement()->CalcTargetPos(mt::Param::s().move_step_len);
                                 ShortFindPath();
                             }
@@ -3503,6 +3515,9 @@ float Creature::InternalGetSpeed()
         float rate = addition + ruduce;
         finaly_speed *= 1.0f + rate;
         #ifdef MYDEBUG
+        if (IsPlayer() && HasBuffEffect(kBET_Sprint)) {
+            int i = 0;
+        }
         if (IsPlayer() && finaly_speed > 500) {
             a8::XPrintf("player speed:%f\n", {finaly_speed});
         }
diff --git a/server/gameserver/player.cc b/server/gameserver/player.cc
index 82816e16..28a02b8e 100644
--- a/server/gameserver/player.cc
+++ b/server/gameserver/player.cc
@@ -229,11 +229,16 @@ void Player::InternalUpdate(int delta_time)
                 moving = false;
             }
         }
-        if (is_client_move) {
+        if (IsClientMove()) {
             if (GetMovement()->GetPathSize() > 0) {
                 moving = true;
             } else {
-                moving = false;
+                if (HasBuffEffect(kBET_Sprint)) {
+                    moving = true;
+                    moved_frames = 0;
+                } else {
+                    moving = false;
+                }
             }
         } else {
             if (GetMovement()->IsFindPath()) {
@@ -1012,7 +1017,7 @@ void Player::_CMMove(f8::MsgHdr* hdr, const cs::CMMove& msg)
     long long pre_frameno = last_cmmove_frameno_;
     last_cmmove_frameno_ = room->GetFrameNo();
     moving = false;
-    if (is_client_move) {
+    if (IsClientMove()) {
         if (msg.has_move_target_pos()) {
             if (std::isfinite(msg.move_target_pos().x()) &&
                 std::isfinite(msg.move_target_pos().y()) &&
@@ -1021,7 +1026,8 @@ void Player::_CMMove(f8::MsgHdr* hdr, const cs::CMMove& msg)
                  std::abs(msg.move_target_pos().x()) > 0.00001f ||
                  std::abs(msg.move_target_pos().y()) > 0.00001f ||
                  std::abs(msg.move_target_pos().z()) > 0.00001f
-                 )
+                 ) &&
+                !HasBuffEffect(kBET_Sprint)
                 ){
                 glm::vec3 tmp_pos;
                 TypeConvert::FromPb(tmp_pos, &msg.move_target_pos());