Hotkeys super sensitive?

#include <windows.h>
#include <time.h> 
bool chams = false;
bool hack = false; 
bool Memoria( void * pDest, char * szPatch, size_t sSize )//NOP Function
{ 
    DWORD dwOrgProtect = NULL; 
    if ( !VirtualProtect ( pDest, sSize, PAGE_EXECUTE_READWRITE, &dwOrgProtect ))
        return FALSE;

    memcpy( pDest, szPatch, sSize ); 
    VirtualProtect( pDest, sSize, dwOrgProtect, NULL ); 
    return TRUE; 
}  
bool IsGameReadyForHook()
{
if( GetModuleHandleA( "d3d9.dll" ) != NULL
&& GetModuleHandleA( "ClientFX.fxd" ) != NULL
&& GetModuleHandleA( "CShell.dll" ) != NULL )
return true;
return false;
}
 void __cdecl ConsolePush(char* sVal)
{
    DWORD zAddress = 0x007D9200;
    void* szConsole = (void*)*(DWORD*)(zAddress);
    _asm
    {
        push sVal
        call szConsole
        add esp, 4
    }
}
void main() {
while(true) {
if(GetAsyncKeyState(VK_NUMPAD0) < 0){
    hack = !hack;
    if(hack){
        ConsolePush("SkelModelStencil 1"); //Nx Chams On
    } else {
        ConsolePush("SkelModelStencil 0"); //Nx Chams Off
	}
Sleep(100);
}
}
}
DWORD WINAPI dwHackThread(LPVOID)
{
while( !IsGameReadyForHook() )
Sleep(100);
main();
return 0;
}
BOOL WINAPI DllMain ( HMODULE hDll, DWORD dwReason, LPVOID lpReserved )
{
DisableThreadLibraryCalls(hDll);
if ( dwReason == DLL_PROCESS_ATTACH )
{
CreateThread(NULL, NULL, dwHackThread, NULL, NULL, NULL);
}
return TRUE;
}