diff --git a/src/game/server/gameinterface.cpp b/src/game/server/gameinterface.cpp
index 88634e5d7..dffb3eaba 100644
--- a/src/game/server/gameinterface.cpp
+++ b/src/game/server/gameinterface.cpp
@@ -2507,6 +2507,9 @@ inline void CServerNetworkProperty::CheckTransmit( CCheckTransmitInfo *pInfo )
 	}
 } */
 
+#ifdef NEO
+ConVar cl_neo_pvs_cull_roaming_observer("cl_neo_pvs_cull_roaming_observer", "0", FCVAR_CLIENTDLL | FCVAR_USERINFO | FCVAR_ARCHIVE, "Cull entities against PVS when out of bounds in the roaming observer mode");
+#endif // NEO
 void CServerGameEnts::CheckTransmit( CCheckTransmitInfo *pInfo, const unsigned short *pEdictIndices, int nEdicts )
 {
 	// NOTE: for speed's sake, this assumes that all networkables are CBaseEntities and that the edict list
@@ -2529,6 +2532,11 @@ void CServerGameEnts::CheckTransmit( CCheckTransmitInfo *pInfo, const unsigned s
 #ifndef _X360
 	const bool bIsHLTV = pRecipientPlayer->IsHLTV();
 	const bool bIsReplay = pRecipientPlayer->IsReplay();
+#ifdef NEO
+	const char* recipientPlayerWantsPVSCull = engine->GetClientConVarValue(pRecipientPlayer->entindex(), "cl_neo_pvs_cull_roaming_observer");
+	const bool bRecipientPlayerWantsPVSCull = recipientPlayerWantsPVSCull && *recipientPlayerWantsPVSCull && (V_atoi(recipientPlayerWantsPVSCull) != 0) ? true : false;
+	const bool bIsRoamingOOBObserver = !bRecipientPlayerWantsPVSCull && pRecipientPlayer->GetObserverMode() == OBS_MODE_ROAMING && engine->GetArea( pRecipientPlayer->GetAbsOrigin()) == 0;
+#endif // NEO
 
 	// m_pTransmitAlways must be set if HLTV client
 	Assert( bIsHLTV == ( pInfo->m_pTransmitAlways != NULL) ||
@@ -2605,7 +2613,11 @@ void CServerGameEnts::CheckTransmit( CCheckTransmitInfo *pInfo, const unsigned s
 		CServerNetworkProperty *netProp = static_cast<CServerNetworkProperty*>( pEdict->GetNetworkable() );
 
 #ifndef _X360
+#ifdef NEO
+		if ( bIsHLTV || bIsReplay || bIsRoamingOOBObserver )
+#else
 		if ( bIsHLTV || bIsReplay )
+#endif // NEO
 		{
 			// for the HLTV/Replay we don't cull against PVS
 			if ( netProp->AreaNum() == skyBoxArea )