diff --git a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_config.h b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_config.h
index 80426546041f..b33ae5a9a640 100644
--- a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_config.h
+++ b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_config.h
@@ -123,9 +123,9 @@ struct TPDiskConfig : public TThrRefBase {
     ui64 CostLimitNs;
 
     // AsyncBlockDevice settings
-    ui32 BufferPoolBufferSizeBytes = 512 << 10;
-    ui32 BufferPoolBufferCount = 256;
-    ui32 MaxQueuedCompletionActions = 128; // BufferPoolBufferCount / 2;
+    ui32 BufferPoolBufferSizeBytes;
+    ui32 BufferPoolBufferCount;
+    ui32 MaxQueuedCompletionActions;
     bool UseSpdkNvmeDriver;
 
     ui64 ExpectedSlotCount = 0;
@@ -211,6 +211,10 @@ struct TPDiskConfig : public TThrRefBase {
         DeviceInFlight = choose(128, 4, hddInFlight);
         CostLimitNs = choose(500'000ull, 20'000'000ull, 50'000'000ull);
 
+        BufferPoolBufferSizeBytes = choose(128 << 10, 256 << 10, 512 << 10);
+        BufferPoolBufferCount = choose(1024, 512, 256);
+        MaxQueuedCompletionActions = BufferPoolBufferCount / 2;
+
         UseSpdkNvmeDriver = Path.StartsWith("PCIe:");
         Y_ABORT_UNLESS(!UseSpdkNvmeDriver || deviceType == NPDisk::DEVICE_TYPE_NVME,
                 "SPDK NVMe driver can be used only with NVMe devices!");
diff --git a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_impl.cpp b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_impl.cpp
index 2595a4fdc3f6..385b9a6d8d81 100644
--- a/ydb/core/blobstorage/pdisk/blobstorage_pdisk_impl.cpp
+++ b/ydb/core/blobstorage/pdisk/blobstorage_pdisk_impl.cpp
@@ -60,10 +60,12 @@ TPDisk::TPDisk(std::shared_ptr<TPDiskCtx> pCtx, const TIntrusivePtr<TPDiskConfig
             0, 64 * 1024 * 1024);
     ForsetiMaxLogBatchNs = TControlWrapper((PDiskCategory.IsSolidState() ? 50'000ll : 500'000ll), 0, 100'000'000ll);
     ForsetiMaxLogBatchNsCached = ForsetiMaxLogBatchNs;
-    ForsetiOpPieceSizeSsd = TControlWrapper(64 * 1024, 1, 512 * 1024);
-    ForsetiOpPieceSizeRot = TControlWrapper(512 * 1024, 1, 512 * 1024);
+    ForsetiOpPieceSizeSsd = TControlWrapper(64 * 1024, 1, Cfg->BufferPoolBufferSizeBytes);
+    ForsetiOpPieceSizeRot = TControlWrapper(512 * 1024, 1, Cfg->BufferPoolBufferSizeBytes);
     ForsetiOpPieceSizeCached = PDiskCategory.IsSolidState() ?  ForsetiOpPieceSizeSsd : ForsetiOpPieceSizeRot;
 
+    
+
     if (Cfg->SectorMap) {
         auto diskModeParams = Cfg->SectorMap->GetDiskModeParams();
         if (diskModeParams) {
@@ -3419,12 +3421,12 @@ void TPDisk::Update() {
     Mon.UpdateDurationTracker.UpdateStarted();
     LWTRACK(PDiskUpdateStarted, UpdateCycleOrbit, PCtx->PDiskId);
 
+    ForsetiMaxLogBatchNsCached = ForsetiMaxLogBatchNs;
+    ForsetiOpPieceSizeCached = PDiskCategory.IsSolidState() ? ForsetiOpPieceSizeSsd : ForsetiOpPieceSizeRot;
+    ForsetiOpPieceSizeCached = Min<i64>(ForsetiOpPieceSizeCached, Cfg->BufferPoolBufferSizeBytes);
+    ForsetiOpPieceSizeCached = AlignDown<i64>(ForsetiOpPieceSizeCached, Format.SectorSize);
     {
         TGuard<TMutex> guard(StateMutex);
-        ForsetiMaxLogBatchNsCached = ForsetiMaxLogBatchNs;
-        ForsetiOpPieceSizeCached = PDiskCategory.IsSolidState() ? ForsetiOpPieceSizeSsd : ForsetiOpPieceSizeRot;
-        ForsetiOpPieceSizeCached = Min<i64>(ForsetiOpPieceSizeCached, Cfg->BufferPoolBufferSizeBytes);
-        ForsetiOpPieceSizeCached = AlignDown<i64>(ForsetiOpPieceSizeCached, Format.SectorSize);
         // Switch the scheduler when possible
         ForsetiScheduler.SetIsBinLogEnabled(EnableForsetiBinLog);