diff --git a/src/actor.h b/src/actor.h
index 6ddbeeb654..b80b21dbef 100644
--- a/src/actor.h
+++ b/src/actor.h
@@ -353,6 +353,7 @@ enum
 	MF7_HITTARGET		= 0x00004000,	// The actor the projectile dies on is set to target, provided it's targetable anyway.
 	MF7_HITMASTER		= 0x00008000,	// Same as HITTARGET, except it's master instead of target.
 	MF7_HITTRACER		= 0x00010000,	// Same as HITTARGET, but for tracer.
+	MF7_FLYCHEAT		= 0x00020000,	// must be part of the actor so that it can be tracked properly
 
 
 
diff --git a/src/g_heretic/a_hereticartifacts.cpp b/src/g_heretic/a_hereticartifacts.cpp
index 1c9df572ca..651e3609c2 100644
--- a/src/g_heretic/a_hereticartifacts.cpp
+++ b/src/g_heretic/a_hereticartifacts.cpp
@@ -48,6 +48,7 @@ bool AArtiTomeOfPower::Use (bool pickup)
 DEFINE_ACTION_FUNCTION(AActor, A_TimeBomb)
 {
 	self->z += 32*FRACUNIT;
+	self->PrevZ = self->z;	// no interpolation!
 	self->RenderStyle = STYLE_Add;
 	self->alpha = FRACUNIT;
 	P_RadiusAttack (self, self->target, 128, 128, self->DamageType, RADF_HURTSOURCE);
diff --git a/src/g_level.cpp b/src/g_level.cpp
index d834035564..9e36b5650b 100644
--- a/src/g_level.cpp
+++ b/src/g_level.cpp
@@ -1235,15 +1235,6 @@ void G_FinishTravel ()
 			pawn->AddToHash ();
 			pawn->SetState(pawn->SpawnState);
 			pawn->player->SendPitchLimits();
-			// Sync the FLY flags.
-			if (pawn->flags2 & MF2_FLY)
-			{
-				pawn->player->cheats |= CF_FLY;
-			}
-			else
-			{
-				pawn->player->cheats &= ~CF_FLY;
-			}
 
 			for (inv = pawn->Inventory; inv != NULL; inv = inv->Inventory)
 			{
diff --git a/src/g_shared/a_artifacts.cpp b/src/g_shared/a_artifacts.cpp
index 21006776e1..14b2704355 100644
--- a/src/g_shared/a_artifacts.cpp
+++ b/src/g_shared/a_artifacts.cpp
@@ -997,7 +997,8 @@ void APowerFlight::EndEffect ()
 	{
 		return;
 	}
-	if (!(Owner->player->cheats & CF_FLY))
+
+	if (!(Owner->flags7 & MF7_FLYCHEAT))
 	{
 		if (Owner->z != Owner->floorz)
 		{
diff --git a/src/m_cheat.cpp b/src/m_cheat.cpp
index e48b79980a..f60131c8e5 100644
--- a/src/m_cheat.cpp
+++ b/src/m_cheat.cpp
@@ -149,8 +149,7 @@ void cht_DoCheat (player_t *player, int cheat)
 	case CHT_FLY:
 		if (player->mo != NULL)
 		{
-			player->cheats ^= CF_FLY;
-			if (player->cheats & CF_FLY)
+			if ((player->mo->flags7 ^= MF7_FLYCHEAT) != 0)
 			{
 				player->mo->flags |= MF_NOGRAVITY;
 				player->mo->flags2 |= MF2_FLY;
diff --git a/src/p_lnspec.cpp b/src/p_lnspec.cpp
index c170cacd3b..b550eeb770 100644
--- a/src/p_lnspec.cpp
+++ b/src/p_lnspec.cpp
@@ -2800,7 +2800,7 @@ FUNC(LS_SetPlayerProperty)
 		mask = CF_INSTANTWEAPSWITCH;
 		break;
 	case PROP_FLY:
-		mask = CF_FLY;
+		//mask = CF_FLY;
 		break;
 	case PROP_TOTALLYFROZEN:
 		mask = CF_TOTALLYFROZEN;
@@ -2814,6 +2814,7 @@ FUNC(LS_SetPlayerProperty)
 			it->player->cheats |= mask;
 			if (arg2 == PROP_FLY)
 			{
+				it->flags7 |= MF7_FLYCHEAT;
 				it->flags2 |= MF2_FLY;
 				it->flags |= MF_NOGRAVITY;
 			}
@@ -2823,6 +2824,7 @@ FUNC(LS_SetPlayerProperty)
 			it->player->cheats &= ~mask;
 			if (arg2 == PROP_FLY)
 			{
+				it->flags7 &= ~MF7_FLYCHEAT;
 				it->flags2 &= ~MF2_FLY;
 				it->flags &= ~MF_NOGRAVITY;
 			}
diff --git a/src/p_mobj.cpp b/src/p_mobj.cpp
index ce9fe722a2..b27c79d912 100644
--- a/src/p_mobj.cpp
+++ b/src/p_mobj.cpp
@@ -4477,7 +4477,7 @@ APlayerPawn *P_SpawnPlayer (FPlayerStart *mthing, int playernum, int flags)
 	p->mo->ResetAirSupply(false);
 	p->Uncrouch();
 	p->MinPitch = p->MaxPitch = 0;	// will be filled in by PostBeginPlay()/netcode
-	p->cheats &= ~CF_FLY;
+
 
 	p->velx = p->vely = 0;		// killough 10/98: initialize bobbing to 0.