diff --git a/eth/downloader/downloader.go b/eth/downloader/downloader.go
index 62842adbc6..84d2f6c404 100644
--- a/eth/downloader/downloader.go
+++ b/eth/downloader/downloader.go
@@ -38,8 +38,8 @@ import (
 
 var (
 	MaxHashFetch    = 512 // Amount of hashes to be fetched per retrieval request
-	MaxBlockFetch   = 128 // Amount of blocks to be fetched per retrieval request
-	MaxHeaderFetch  = 192 // Amount of block headers to be fetched per retrieval request
+	MaxBlockFetch   = 900 // Amount of blocks to be fetched per retrieval request
+	MaxHeaderFetch  = 900 // Amount of block headers to be fetched per retrieval request
 	MaxSkeletonSize = 128 // Number of header fetches to need for a skeleton assembly
 	MaxBodyFetch    = 128 // Amount of block bodies to be fetched per retrieval request
 	MaxReceiptFetch = 256 // Amount of transaction receipts to allow fetching per request
@@ -56,8 +56,8 @@ var (
 	qosConfidenceCap = 10   // Number of peers above which not to modify RTT confidence
 	qosTuningImpact  = 0.25 // Impact that a new tuning target has on the previous value
 
-	maxQueuedHeaders  = 32 * 1024 // [eth/62] Maximum number of headers to queue for import (DOS protection)
-	maxHeadersProcess = 2048      // Number of header download results to import at once into the chain
+	maxQueuedHeaders  = 900 // [eth/62] Maximum number of headers to queue for import (DOS protection)
+	maxHeadersProcess = 900      // Number of header download results to import at once into the chain
 	maxResultsProcess = 2048      // Number of content download results to import at once into the chain
 
 	fsHeaderCheckFrequency = 100             // Verification frequency of the downloaded headers during fast sync