Minor fine tuning of some default parameters

Author: gorhill

src/js/background.js

@@ -41,7 +41,7 @@ const µBlock = (( ) => { // jshint ignore:line
         autoCommentFilterTemplate: '{{date}} {{origin}}',
         autoUpdateAssetFetchPeriod: 120,
         autoUpdateDelayAfterLaunch: 180,
-        autoUpdatePeriod: 7,
+        autoUpdatePeriod: 4,
         benchmarkDatasetURL: 'unset',
         blockingProfiles: '11111/#F00 11010/#C0F 11001/#00F 00001',
         cacheStorageAPI: 'unset',

src/js/static-net-filtering.js

@@ -3437,7 +3437,7 @@ FilterContainer.prototype.freeze = function() {
     this.optimizeTimerId = self.requestIdleCallback(( ) => {
         this.optimizeTimerId = undefined;
         this.optimize();
-    }, { timeout: 10000 });
+    }, { timeout: 5000 });
 
     log.info(`staticNetFilteringEngine.freeze() took ${Date.now()-t0} ms`);
 };