diff --git a/internal/collection/collection.go b/internal/collection/collection.go
index 821f0ff4..ad107e38 100644
--- a/internal/collection/collection.go
+++ b/internal/collection/collection.go
@@ -1,6 +1,8 @@
 package collection
 
 import (
+	"runtime"
+
 	"github.com/tidwall/boxtree/d2"
 	"github.com/tidwall/btree"
 	"github.com/tidwall/geojson"
@@ -9,6 +11,9 @@ import (
 	"github.com/tidwall/tinybtree"
 )
 
+// yieldStep forces the iterator to yield goroutine every N steps.
+const yieldStep = 0xFF
+
 // Cursor allows for quickly paging through Scan, Within, Intersects, and Nearby
 type Cursor interface {
 	Offset() uint64
@@ -330,6 +335,9 @@ func (c *Collection) Scan(desc bool, cursor Cursor,
 		if count <= offset {
 			return true
 		}
+		if count&yieldStep == yieldStep {
+			runtime.Gosched()
+		}
 		if cursor != nil {
 			cursor.Step(1)
 		}
@@ -361,6 +369,9 @@ func (c *Collection) ScanRange(start, end string, desc bool, cursor Cursor,
 		if count <= offset {
 			return true
 		}
+		if count&yieldStep == yieldStep {
+			runtime.Gosched()
+		}
 		if cursor != nil {
 			cursor.Step(1)
 		}
@@ -402,6 +413,9 @@ func (c *Collection) SearchValues(desc bool, cursor Cursor,
 		if count <= offset {
 			return true
 		}
+		if count&yieldStep == yieldStep {
+			runtime.Gosched()
+		}
 		if cursor != nil {
 			cursor.Step(1)
 		}
@@ -434,6 +448,9 @@ func (c *Collection) SearchValuesRange(start, end string, desc bool,
 		if count <= offset {
 			return true
 		}
+		if count&yieldStep == yieldStep {
+			runtime.Gosched()
+		}
 		if cursor != nil {
 			cursor.Step(1)
 		}
@@ -468,6 +485,9 @@ func (c *Collection) ScanGreaterOrEqual(id string, desc bool,
 		if count <= offset {
 			return true
 		}
+		if count&yieldStep == yieldStep {
+			runtime.Gosched()
+		}
 		if cursor != nil {
 			cursor.Step(1)
 		}
@@ -591,6 +611,9 @@ func (c *Collection) Within(
 				if count <= offset {
 					return false, true
 				}
+				if count&yieldStep == yieldStep {
+					runtime.Gosched()
+				}
 				if cursor != nil {
 					cursor.Step(1)
 				}
@@ -607,6 +630,9 @@ func (c *Collection) Within(
 			if count <= offset {
 				return true
 			}
+			if count&yieldStep == yieldStep {
+				runtime.Gosched()
+			}
 			if cursor != nil {
 				cursor.Step(1)
 			}
@@ -641,6 +667,9 @@ func (c *Collection) Intersects(
 				if count <= offset {
 					return false, true
 				}
+				if count&yieldStep == yieldStep {
+					runtime.Gosched()
+				}
 				if cursor != nil {
 					cursor.Step(1)
 				}
@@ -657,6 +686,9 @@ func (c *Collection) Intersects(
 			if count <= offset {
 				return true
 			}
+			if count&yieldStep == yieldStep {
+				runtime.Gosched()
+			}
 			if cursor != nil {
 				cursor.Step(1)
 			}
@@ -714,6 +746,9 @@ func (c *Collection) Nearby(
 			if count <= offset {
 				return true
 			}
+			if count&yieldStep == yieldStep {
+				runtime.Gosched()
+			}
 			if cursor != nil {
 				cursor.Step(1)
 			}