diff --git a/src/ext/uw-bg.js b/src/ext/uw-bg.js
index 550e5ee..42cd0ce 100644
--- a/src/ext/uw-bg.js
+++ b/src/ext/uw-bg.js
@@ -56,8 +56,6 @@ class UWServer {
     } else if (BrowserDetect.chrome) {
       chrome.tabs.onActivated.addListener(function(m) {ths.onTabSwitched(m)});
     }
-
-    this.scheduleGc();
   }
 
   async _promisifyTabsGet(browserObj, tabId){
@@ -97,23 +95,6 @@ class UWServer {
     }
   }
 
-  scheduleGc(timeout) {
-    if (this._gctimeout) {
-      return;
-    }
-    if (!timeout) {
-      timeout = 0;
-    }
-
-    const ths = this;
-    setTimeout( () => {
-      clearTimeout(ths._gctimeout);
-      ths.gcFrames();
-
-      ths._gctimeoutgcTimeout = ths.scheduleGc(5000);
-    }, timeout);
-  }
-
   extractHostname(url){
     var hostname;
     
@@ -157,28 +138,6 @@ class UWServer {
     //TODO: change extension icon based on whether there's any videos on current page
   }
 
-  async gcFrames() {
-    // does "garbage collection" on frames
-
-    let frames;
-    
-    if (BrowserDetect.firefox) {
-      frames = await browser.webNavigation.getAllFrames({tabId: this.currentTabId});
-    } else if (BrowserDetect.chrome) {
-      frames = await new Promise( (resolve, reject) => {
-        chrome.webNavigation.getAllFrames({tabId: this.currentTabId}, (data) => {resolve(data); return true});
-      });
-    }
-
-    if (this.videoTabs[this.currentTabId]) {
-      for (let key in this.videoTabs[this.currentTabId].frames) {
-        if (! frames.find(x => x.frameId == key)) {
-          delete this.videoTabs[this.currentTabId].frames[key];
-        }
-      }
-    }
-  }
-
   registerVideo(sender) {
     this.logger.log('info', 'comms', '[UWServer::registerVideo] Registering video.\nsender:', sender);
 
diff --git a/src/manifest.json b/src/manifest.json
index 82efb71..6ffb2c9 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -59,8 +59,7 @@
   "permissions": [
     "storage",
     "activeTab",
-    "<all_urls>",
-    "webNavigation"
+    "<all_urls>"
   ],
   "optional_permissions": [
     "downloads"