diff --git a/build/params_debug.go b/build/params_debug.go
index 7186ee478..644a5d7b5 100644
--- a/build/params_debug.go
+++ b/build/params_debug.go
@@ -7,6 +7,8 @@ import "os"
 // Seconds
 const BlockDelay = 6
 
+const PropagationDelay = 3
+
 // FallbackPoStDelay is the number of epochs the miner needs to wait after
 //  ElectionPeriodStart before starting fallback post computation
 //
diff --git a/build/params_devnet.go b/build/params_devnet.go
index c2c1c3905..6f53d2704 100644
--- a/build/params_devnet.go
+++ b/build/params_devnet.go
@@ -5,6 +5,8 @@ package build
 // Seconds
 const BlockDelay = 30
 
+const PropagationDelay = 5
+
 // FallbackPoStDelay is the number of epochs the miner needs to wait after
 //  ElectionPeriodStart before starting fallback post computation
 //
diff --git a/chain/store/store.go b/chain/store/store.go
index 9f977b161..9f20626e8 100644
--- a/chain/store/store.go
+++ b/chain/store/store.go
@@ -290,7 +290,7 @@ func (cs *ChainStore) takeHeaviestTipSet(ctx context.Context, ts *types.TipSet)
 
 	span.AddAttributes(trace.BoolAttribute("newHead", true))
 
-	log.Debugf("New heaviest tipset! %s", ts.Cids())
+	log.Infof("New heaviest tipset! %s (height=%d)", ts.Cids())
 	cs.heaviest = ts
 
 	if err := cs.writeHead(ts); err != nil {
diff --git a/chain/sync_manager.go b/chain/sync_manager.go
index 0e296d617..104ca674c 100644
--- a/chain/sync_manager.go
+++ b/chain/sync_manager.go
@@ -71,7 +71,6 @@ func (sm *SyncManager) Stop() {
 }
 
 func (sm *SyncManager) SetPeerHead(ctx context.Context, p peer.ID, ts *types.TipSet) {
-	log.Info("set peer head!", ts.Height(), ts.Cids())
 	sm.lk.Lock()
 	defer sm.lk.Unlock()
 	sm.peerHeads[p] = ts
@@ -336,7 +335,6 @@ func (sm *SyncManager) syncWorker(id int) {
 				log.Info("sync manager worker shutting down")
 				return
 			}
-			log.Info("sync worker go time!", ts.Height(), ts.Cids())
 
 			ctx := context.WithValue(context.TODO(), syncStateKey{}, ss)
 			err := sm.doSync(ctx, ts)
diff --git a/miner/miner.go b/miner/miner.go
index ef5ef0b7c..f4e5b9ea8 100644
--- a/miner/miner.go
+++ b/miner/miner.go
@@ -27,7 +27,7 @@ func NewMiner(api api.FullNode, epp gen.ElectionPoStProver) *Miner {
 		epp: epp,
 		waitFunc: func(ctx context.Context) error {
 			// Wait around for half the block time in case other parents come in
-			time.Sleep(build.BlockDelay * time.Second / 2)
+			time.Sleep(build.PropagationDelay * time.Second)
 			return nil
 		},
 	}