diff --git a/ants.go b/ants.go
index 2da0304..246d91c 100644
--- a/ants.go
+++ b/ants.go
@@ -97,8 +97,8 @@ var (
 )
 
 const (
-	nowTimeUpdateInterval  = 500 * time.Millisecond
-	releaseTimeoutInterval = 100 * time.Millisecond
+	nowTimeUpdateInterval = 500 * time.Millisecond
+	releaseTimeoutCount   = 10
 )
 
 // Logger is used for logging formatted messages.
diff --git a/pool.go b/pool.go
index 5ef1874..8406da4 100644
--- a/pool.go
+++ b/pool.go
@@ -299,6 +299,7 @@ func (p *Pool) ReleaseTimeout(timeout time.Duration) error {
 	}
 	p.Release()
 
+	interval := timeout / releaseTimeoutCount
 	endTime := time.Now().Add(timeout)
 	for time.Now().Before(endTime) {
 		if p.Running() == 0 &&
@@ -306,7 +307,7 @@ func (p *Pool) ReleaseTimeout(timeout time.Duration) error {
 			atomic.LoadInt32(&p.ticktockDone) == 1 {
 			return nil
 		}
-		time.Sleep(releaseTimeoutInterval)
+		time.Sleep(interval)
 	}
 	return ErrTimeout
 }
diff --git a/pool_func.go b/pool_func.go
index ef3a664..290ae36 100644
--- a/pool_func.go
+++ b/pool_func.go
@@ -304,6 +304,7 @@ func (p *PoolWithFunc) ReleaseTimeout(timeout time.Duration) error {
 	}
 	p.Release()
 
+	interval := timeout / releaseTimeoutCount
 	endTime := time.Now().Add(timeout)
 	for time.Now().Before(endTime) {
 		if p.Running() == 0 &&
@@ -311,7 +312,7 @@ func (p *PoolWithFunc) ReleaseTimeout(timeout time.Duration) error {
 			atomic.LoadInt32(&p.ticktockDone) == 1 {
 			return nil
 		}
-		time.Sleep(releaseTimeoutInterval)
+		time.Sleep(interval)
 	}
 	return ErrTimeout
 }