diff --git a/hbs2-core/lib/HBS2/Defaults.hs b/hbs2-core/lib/HBS2/Defaults.hs
index d75fea41..12eacf2f 100644
--- a/hbs2-core/lib/HBS2/Defaults.hs
+++ b/hbs2-core/lib/HBS2/Defaults.hs
@@ -55,7 +55,7 @@ defBlockSizeCacheTime :: TimeSpec
 defBlockSizeCacheTime = toTimeSpec ( 30 :: Timeout 'Seconds )
 
 defRequestLimitSec :: Timeout 'Seconds
-defRequestLimitSec = 300
+defRequestLimitSec = 10 -- 300
 
 defBlockBanTime :: TimeSpec
 defBlockBanTime = toTimeSpec defBlockBanTimeSec
@@ -70,7 +70,7 @@ defBlockWipTimeout :: TimeSpec
 defBlockWipTimeout = defCookieTimeout
 
 defBlockInfoTimeout :: Timeout 'Seconds
-defBlockInfoTimeout = 20
+defBlockInfoTimeout = 1
 
 defBlockInfoTimeoutSpec :: TimeSpec
 defBlockInfoTimeoutSpec = toTimeSpec defBlockInfoTimeout
diff --git a/hbs2-core/lib/HBS2/Net/Proto/Definition.hs b/hbs2-core/lib/HBS2/Net/Proto/Definition.hs
index 0def4283..0fa8b3bd 100644
--- a/hbs2-core/lib/HBS2/Net/Proto/Definition.hs
+++ b/hbs2-core/lib/HBS2/Net/Proto/Definition.hs
@@ -72,7 +72,7 @@ instance HasProtocol L4Proto (BlockInfo L4Proto) where
 
   -- FIXME: requestMinPeriod-breaks-fast-block-download
   --
-  requestPeriodLim = ReqLimPerMessage 1
+  requestPeriodLim = ReqLimPerMessage 0.5
 
 instance HasProtocol L4Proto (BlockChunks L4Proto) where
   type instance ProtocolId (BlockChunks L4Proto) = 2
@@ -116,7 +116,7 @@ instance HasProtocol L4Proto (RefLogUpdate L4Proto) where
   encode = serialise
 
   -- TODO: find-out-optimal-max-safe-frequency
-  requestPeriodLim = ReqLimPerMessage 600
+  requestPeriodLim = ReqLimPerMessage 60
 
 instance HasProtocol L4Proto (RefLogRequest L4Proto) where
   type instance ProtocolId (RefLogRequest L4Proto) = 8
@@ -148,7 +148,7 @@ instance HasProtocol L4Proto (EncryptionHandshake L4Proto) where
   decode = deserialiseCustom
   encode = serialise
 
-  requestPeriodLim = ReqLimPerProto 0.5
+  requestPeriodLim = ReqLimPerProto 0.1
 
 
 instance HasProtocol L4Proto (RefChanUpdate L4Proto) where
diff --git a/hbs2-peer/app/BlockDownload.hs b/hbs2-peer/app/BlockDownload.hs
index 974036e1..afaa3d30 100644
--- a/hbs2-peer/app/BlockDownload.hs
+++ b/hbs2-peer/app/BlockDownload.hs
@@ -514,6 +514,7 @@ blockDownloadLoop env0 = do
       wipNum  <- asks (view blockInQ) >>= liftIO . readTVarIO <&> HashMap.size
 
       when (wipNum == 0) do
+        trace "NOTHING TO DOWNLOAD"
         pause @'Seconds 1
         next
 
@@ -527,7 +528,7 @@ blockDownloadLoop env0 = do
                  pure $ not busy
 
       when (List.null pips) do
-        void $ liftIO $ race (pause @'Seconds 5) $ do
+        void $ liftIO $ race (pause @'Seconds 1) $ do
           trace "ALL PEERS BUSY"
           void $ liftIO $ atomically $ do
             p <- readTQueue released
@@ -569,7 +570,7 @@ blockDownloadLoop env0 = do
                 liftIO $ atomically $ modifyTVar downMiss succ
 
               Right (Just size) -> do
-                -- trace $ "BLOCK SIZE" <+> pretty p <+> pretty h <+> pretty size
+                trace $ "BLOCK SIZE" <+> pretty p <+> pretty h <+> pretty size
                 let downFail = view peerDownloadFail pinfo
                 let downBlk  = view peerDownloadedBlk pinfo
 
diff --git a/hbs2-peer/app/Brains.hs b/hbs2-peer/app/Brains.hs
index 55e51551..0317d5de 100644
--- a/hbs2-peer/app/Brains.hs
+++ b/hbs2-peer/app/Brains.hs
@@ -112,7 +112,6 @@ instance ( Hashable (Peer e)
     updateOP br (deleteDownload br what)
 
   onKnownPeers br ps = do
-    trace $ "BRAINS: onKnownPeers" <+> pretty ps
     let tv = view brainsPeers br
     liftIO $ atomically $ writeTVar tv ps
     updateOP br $ do