diff --git a/client/aux.js b/client/aux.js
index ceb2897..c3e8ae3 100644
--- a/client/aux.js
+++ b/client/aux.js
@@ -156,6 +156,11 @@ function tv_add(tv, item) {
     tv.data[tv.size++] = item;
 }
 
+function tv_add2(tv, item) {
+    tv_ensure_by(tv, 1);
+    tv_add(tv, item);
+}
+
 function tv_pop(tv) {
     const result = tv.data[tv.size - 1];
     tv.size--;
diff --git a/client/bvh.js b/client/bvh.js
index 94486ff..45496c4 100644
--- a/client/bvh.js
+++ b/client/bvh.js
@@ -98,7 +98,7 @@ function bvh_add_stroke(bvh, index, stroke) {
     }
 
     if (bvh.pqueue.capacity < Math.ceil(bvh.nodes.length * 1.2)) {
-        bvh.pqueue = new MinQueue(bvh.pqueue.capacity * 2);        
+        bvh.pqueue = new MinQueue(bvh.nodes.length * 2);        
     }
 
     // It's as easy as 1-2-3
@@ -141,7 +141,7 @@ function bvh_add_stroke(bvh, index, stroke) {
     bvh.nodes[new_parent].bbox = new_bbox;
     bvh.nodes[new_parent].area = (new_bbox.x2 - new_bbox.x1) * (new_bbox.y2 - new_bbox.y1);   
 
-    // 3. Refit 
+    // 3. Refit and insert in fullnode 
     let refit_index = bvh.nodes[leaf_index].parent_index;
     while (refit_index !== null) {
         const child1 = bvh.nodes[refit_index].child1;
@@ -149,6 +149,10 @@ function bvh_add_stroke(bvh, index, stroke) {
 
         bvh.nodes[refit_index].bbox = quad_union(bvh.nodes[child1].bbox, bvh.nodes[child2].bbox);
 
+        if (bvh.nodes[refit_index].is_fullnode) {
+            tv_add2(bvh.nodes[refit_index].stroke_indices, index); 
+        }
+
         refit_index = bvh.nodes[refit_index].parent_index;
     }
 }
diff --git a/client/speed.js b/client/speed.js
index c03d4d8..37dcf75 100644
--- a/client/speed.js
+++ b/client/speed.js
@@ -119,9 +119,9 @@ function wasm_ensure_by(state, nstrokes, ncoords) {
     }
 
     if (realloc) {
-        const current_pages = state.wasm.memory.buffer.byteLength / (4096 * 16);
-        const need_pages = (state.wasm.coords_bytes * 3 + state.wasm.stroke_bytes * 2) / (4096 * 16); // TODO: figure out actual memory requirements
-        const grow_by = need_pages - current_pages;
+        const current_pages = Math.ceil(state.wasm.memory.buffer.byteLength / (4096 * 16));
+        const need_pages = Math.ceil((state.wasm.coords_bytes * 3 + state.wasm.stroke_bytes * 2) / (4096 * 16)); // TODO: figure out actual memory requirements
+        const grow_by = Math.max(1, need_pages - current_pages);
 
         state.wasm.memory.grow(grow_by);
         state.wasm.exports.free_static();