diff --git a/src/gui/rhi/qrhi.cpp b/src/gui/rhi/qrhi.cpp
index 521ea92d942..5a6bdc9e31c 100644
--- a/src/gui/rhi/qrhi.cpp
+++ b/src/gui/rhi/qrhi.cpp
@@ -9439,8 +9439,8 @@ void QRhiResourceUpdateBatchPrivate::merge(QRhiResourceUpdateBatchPrivate *other
 
 bool QRhiResourceUpdateBatchPrivate::hasOptimalCapacity() const
 {
-    return activeBufferOpCount < BUFFER_OPS_STATIC_ALLOC - 16
-            && activeTextureOpCount < TEXTURE_OPS_STATIC_ALLOC - 16;
+    return activeBufferOpCount < BUFFER_OPS_STATIC_ALLOC - 4
+            && activeTextureOpCount < TEXTURE_OPS_STATIC_ALLOC - 4;
 }
 
 void QRhiResourceUpdateBatchPrivate::trimOpLists()
diff --git a/src/gui/rhi/qrhi_p.h b/src/gui/rhi/qrhi_p.h
index fc3da12f787..68e3533053b 100644
--- a/src/gui/rhi/qrhi_p.h
+++ b/src/gui/rhi/qrhi_p.h
@@ -527,11 +527,11 @@ public:
     };
 
     int activeBufferOpCount = 0; // this is the real number of used elements in bufferOps, not bufferOps.count()
-    static const int BUFFER_OPS_STATIC_ALLOC = 1024;
+    static const int BUFFER_OPS_STATIC_ALLOC = 64;
     QVarLengthArray<BufferOp, BUFFER_OPS_STATIC_ALLOC> bufferOps;
 
     int activeTextureOpCount = 0; // this is the real number of used elements in textureOps, not textureOps.count()
-    static const int TEXTURE_OPS_STATIC_ALLOC = 256;
+    static const int TEXTURE_OPS_STATIC_ALLOC = 32;
     QVarLengthArray<TextureOp, TEXTURE_OPS_STATIC_ALLOC> textureOps;
 
     QRhiResourceUpdateBatch *q = nullptr;