diff --git a/platform/core/src/classes/StudyLoadingListener.js b/platform/core/src/classes/StudyLoadingListener.js
index 3c3580618..d00bdaadc 100644
--- a/platform/core/src/classes/StudyLoadingListener.js
+++ b/platform/core/src/classes/StudyLoadingListener.js
@@ -401,7 +401,7 @@ class StackLoadingListener extends BaseLoadingListener {
     const totalFramesCount = this.stack.imageIds.length;
     const loadedFramesCount = this.loadedCount;
     const loadingFramesCount = totalFramesCount - loadedFramesCount;
-    const percentComplete = Math.round(
+    const percentComplete = Math.ceil(
       (loadedFramesCount / totalFramesCount) * 100
     );
     const progressId = this._getProgressId();
diff --git a/platform/ui/src/components/studyBrowser/Thumbnail.js b/platform/ui/src/components/studyBrowser/Thumbnail.js
index 926e49e1f..60529d694 100644
--- a/platform/ui/src/components/studyBrowser/Thumbnail.js
+++ b/platform/ui/src/components/studyBrowser/Thumbnail.js
@@ -177,7 +177,9 @@ function Thumbnail(props) {
       const { progressId, progressData } = detail;
       if (`StackProgress:${displaySetInstanceUID}` === progressId) {
         const percent = progressData ? progressData.percentComplete : 0;
-        setStackPercentComplete(percent);
+        if (percent > stackPercentComplete) {
+          setStackPercentComplete(percent);
+        }
       }
     }, 100);