diff --git a/halo/cmd/cometconfig.go b/halo/cmd/cometconfig.go
index f6b23309a..f4e40769b 100644
--- a/halo/cmd/cometconfig.go
+++ b/halo/cmd/cometconfig.go
@@ -44,6 +44,7 @@ func DefaultCometConfig(homeDir string) cfg.Config {
 	conf.Mempool.Type = cfg.MempoolTypeNop             // Disable cometBFT mempool
 	conf.ProxyApp = ""                                 // Only support built-in ABCI app supported.
 	conf.ABCI = ""                                     // Only support built-in ABCI app supported.
+	conf.Consensus.TimeoutPropose = time.Second        // Mitigate slow blocks when proposer inactive (default=3s).
 
 	return *conf
 }
diff --git a/halo/cmd/testdata/TestRunCmd_defaults.golden b/halo/cmd/testdata/TestRunCmd_defaults.golden
index cd99ae3a1..449794177 100644
--- a/halo/cmd/testdata/TestRunCmd_defaults.golden
+++ b/halo/cmd/testdata/TestRunCmd_defaults.golden
@@ -130,7 +130,7 @@
   "Consensus": {
    "RootDir": "./halo",
    "WalPath": "data/cs.wal/wal",
-   "TimeoutPropose": 3000000000,
+   "TimeoutPropose": 1000000000,
    "TimeoutProposeDelta": 500000000,
    "TimeoutPrevote": 1000000000,
    "TimeoutPrevoteDelta": 500000000,
diff --git a/halo/cmd/testdata/TestRunCmd_flags.golden b/halo/cmd/testdata/TestRunCmd_flags.golden
index cce3d48d6..b1222eff9 100644
--- a/halo/cmd/testdata/TestRunCmd_flags.golden
+++ b/halo/cmd/testdata/TestRunCmd_flags.golden
@@ -130,7 +130,7 @@
   "Consensus": {
    "RootDir": "foo",
    "WalPath": "data/cs.wal/wal",
-   "TimeoutPropose": 3000000000,
+   "TimeoutPropose": 1000000000,
    "TimeoutProposeDelta": 500000000,
    "TimeoutPrevote": 1000000000,
    "TimeoutPrevoteDelta": 500000000,
diff --git a/halo/cmd/testdata/TestRunCmd_json_files.golden b/halo/cmd/testdata/TestRunCmd_json_files.golden
index 8f3cc9ef4..5cc80dc3b 100644
--- a/halo/cmd/testdata/TestRunCmd_json_files.golden
+++ b/halo/cmd/testdata/TestRunCmd_json_files.golden
@@ -130,7 +130,7 @@
   "Consensus": {
    "RootDir": "testinput/input2",
    "WalPath": "data/cs.wal/wal",
-   "TimeoutPropose": 3000000000,
+   "TimeoutPropose": 1000000000,
    "TimeoutProposeDelta": 500000000,
    "TimeoutPrevote": 1000000000,
    "TimeoutPrevoteDelta": 500000000,
diff --git a/halo/cmd/testdata/TestRunCmd_toml_files.golden b/halo/cmd/testdata/TestRunCmd_toml_files.golden
index 25ce7a00c..159f8f13d 100644
--- a/halo/cmd/testdata/TestRunCmd_toml_files.golden
+++ b/halo/cmd/testdata/TestRunCmd_toml_files.golden
@@ -133,7 +133,7 @@
   "Consensus": {
    "RootDir": "testinput/input1",
    "WalPath": "data/cs.wal/wal",
-   "TimeoutPropose": 3000000000,
+   "TimeoutPropose": 1000000000,
    "TimeoutProposeDelta": 500000000,
    "TimeoutPrevote": 1000000000,
    "TimeoutPrevoteDelta": 500000000,