diff --git a/wcag-validation/src/main/java/org/verapdf/gf/model/factory/chunks/ChunkParser.java b/wcag-validation/src/main/java/org/verapdf/gf/model/factory/chunks/ChunkParser.java
index af389f555..6626c9298 100644
--- a/wcag-validation/src/main/java/org/verapdf/gf/model/factory/chunks/ChunkParser.java
+++ b/wcag-validation/src/main/java/org/verapdf/gf/model/factory/chunks/ChunkParser.java
@@ -738,6 +738,15 @@ private void processLineChunk(BoundingBox boundingBox, Long mcid, LineChunk line
 		lineArtContainer.add(mcid, lineChunk, operatorIndex, xObjectName);
 		if (StaticStorages.getIsIgnoreMCIDs()) {
 			boundingBox.union(lineChunk.getBoundingBox());
+			// The line carries only the operator that painted it. The region's
+			// full list goes once onto the LineArtChunk that processLineArts
+			// builds, whose box holds the line, and a consumer that needs the
+			// whole region finds that chunk through this operator and that box.
+			// Giving every line the full list cost lines x operators objects: one
+			// chart of 7,500 strokes made 56 million and ran out of heap.
+			if (StaticContainers.isDataLoader()) {
+				lineChunk.getStreamInfos().add(new StreamInfo(operatorIndex, xObjectName, null));
+			}
 		}
 	}
 	
@@ -1161,11 +1170,8 @@ public void processLineArts() {
 		List<StreamInfo> pending = lineArtContainer.getStreamInfos(null);
 		List<LineChunk> lineChunks = lineArtContainer.getLineChunks(null);
 		if (lineChunks != null && !lineChunks.isEmpty()) {
-			for (LineChunk lineChunk : lineChunks) {
-				for (StreamInfo info : pending) {
-					lineChunk.getStreamInfos().add(new StreamInfo(info));
-				}
-			}
+			// Each line already holds its own operator (processLineChunk). The
+			// region's list is attached to the boxes below only, once per box.
 			artifacts.addAll(lineChunks);
 			lineChunks.clear();
 		}