diff --git a/app/model/ServiceList.js b/app/model/ServiceList.js
index 86f3537a..94714ed5 100644
--- a/app/model/ServiceList.js
+++ b/app/model/ServiceList.js
@@ -44,6 +44,14 @@ Ext.define('Rambox.model.ServiceList', {
 		 name: 'manual_notifications'
 		,type: 'boolean'
 		,defaultValue: false
+	},{
+		 name: 'passive_event_listeners'
+		 ,type: 'boolean'
+		 ,defaultValue: true
+	},{
+		name: 'slowed_timers'
+		,type: 'boolean'
+		,defaultValue: true
 	},{
 		 name: 'userAgent'
 		,type: 'string'
diff --git a/app/store/ServicesList.js b/app/store/ServicesList.js
index 90104f20..a4b619b0 100644
--- a/app/store/ServicesList.js
+++ b/app/store/ServicesList.js
@@ -29,6 +29,7 @@ Ext.define('Rambox.store.ServicesList', {
 			,url: 'https://web.whatsapp.com/'
 			,type: 'messaging'
 			,js_unread: `let checkUnread=()=>{const elements=document.querySelectorAll(".CxUIE, .unread");let count=0;for(let i of elements)0===i.querySelectorAll('*[data-icon="muted"]').length&&count++;rambox.updateBadge(count)};setInterval(checkUnread,1e3);`
+			,slowed_timers: false
 		},
 		{
 			 id: 'slack'
diff --git a/app/ux/WebView.js b/app/ux/WebView.js
index 172d1681..eebf09a8 100644
--- a/app/ux/WebView.js
+++ b/app/ux/WebView.js
@@ -450,6 +450,23 @@ Ext.define('Rambox.ux.WebView',{
 						css_inject += custom_css;
 					}
 				}
+				// Use passive listeners by default
+				let passive_event_listeners = Ext.getStore('ServicesList').getById(me.record.get('type')).get('passive_event_listeners');
+				if (passive_event_listeners && me.record.get('passive_event_listeners'))
+				{
+					// 3rdparty: This uses npm 'default-passive-events' 1.0.10 inline. Link to license:
+					// https://github.com/zzarcon/default-passive-events/blob/master/LICENSE
+					const passive_event_listeners = `const eventListenerOptionsSupported=()=>{let supported=!1;try{const opts=Object.defineProperty({},"passive",{get(){supported=!0}});window.addEventListener("test",null,opts),window.removeEventListener("test",null,opts)}catch(e){}return supported},defaultOptions={passive:!0,capture:!1},supportedPassiveTypes=["scroll","wheel","touchstart","touchmove","touchenter","touchend","touchleave","mouseout","mouseleave","mouseup","mousedown","mousemove","mouseenter","mousewheel","mouseover"],getDefaultPassiveOption=(passive,eventName)=>void 0!==passive?passive:-1!==supportedPassiveTypes.indexOf(eventName)&&defaultOptions.passive,getWritableOptions=options=>{const passiveDescriptor=Object.getOwnPropertyDescriptor(options,"passive");return passiveDescriptor&&!0!==passiveDescriptor.writable&&void 0===passiveDescriptor.set?Object.assign({},options):options},overwriteAddEvent=superMethod=>{EventTarget.prototype.addEventListener=function(type,listener,options){const usesListenerOptions="object"==typeof options&&null!==options,useCapture=usesListenerOptions?options.capture:options;(options=usesListenerOptions?getWritableOptions(options):{}).passive=getDefaultPassiveOption(options.passive,type),options.capture=void 0===useCapture?defaultOptions.capture:useCapture,superMethod.call(this,type,listener,options)},EventTarget.prototype.addEventListener._original=superMethod},supportsPassive=eventListenerOptionsSupported();if(supportsPassive){const addEvent=EventTarget.prototype.addEventListener;overwriteAddEvent(addEvent)}`;
+					js_inject += '{' + passive_event_listeners + '}';
+				}
+
+				// Use slowed timers by default
+				let slowed_timers = Ext.getStore('ServicesList').getById(me.record.get('type')).get('slowed_timers');
+				if (slowed_timers && me.record.get('slowed_timers'))
+				{
+					const slowed_timers = `window.setTimeout=window.setTimeout;const __setTimeout=window.setTimeout;window.setTimeout=function(func,time){let a=time;return a<100&&(a=100),__setTimeout(func,a)};`;
+					js_inject += '{' + slowed_timers + '}';
+				}
 			}
 
 			// Prevent Title blinking (some services have) and only allow when the title have an unread regex match: "(3) Title"
@@ -458,21 +475,6 @@ Ext.define('Rambox.ux.WebView',{
 				js_inject += js_preventBlink;
 			}
 
-			// Use passive listeners by default
-			if (me.record.get('passive_event_listeners'))
-			{
-				// 3rdparty: This uses npm 'default-passive-events' 1.0.10 inline. Link to license:
-				// https://github.com/zzarcon/default-passive-events/blob/master/LICENSE
-				const passive_event_listeners = `const eventListenerOptionsSupported=()=>{let supported=!1;try{const opts=Object.defineProperty({},"passive",{get(){supported=!0}});window.addEventListener("test",null,opts),window.removeEventListener("test",null,opts)}catch(e){}return supported},defaultOptions={passive:!0,capture:!1},supportedPassiveTypes=["scroll","wheel","touchstart","touchmove","touchenter","touchend","touchleave","mouseout","mouseleave","mouseup","mousedown","mousemove","mouseenter","mousewheel","mouseover"],getDefaultPassiveOption=(passive,eventName)=>void 0!==passive?passive:-1!==supportedPassiveTypes.indexOf(eventName)&&defaultOptions.passive,getWritableOptions=options=>{const passiveDescriptor=Object.getOwnPropertyDescriptor(options,"passive");return passiveDescriptor&&!0!==passiveDescriptor.writable&&void 0===passiveDescriptor.set?Object.assign({},options):options},overwriteAddEvent=superMethod=>{EventTarget.prototype.addEventListener=function(type,listener,options){const usesListenerOptions="object"==typeof options&&null!==options,useCapture=usesListenerOptions?options.capture:options;(options=usesListenerOptions?getWritableOptions(options):{}).passive=getDefaultPassiveOption(options.passive,type),options.capture=void 0===useCapture?defaultOptions.capture:useCapture,superMethod.call(this,type,listener,options)},EventTarget.prototype.addEventListener._original=superMethod},supportsPassive=eventListenerOptionsSupported();if(supportsPassive){const addEvent=EventTarget.prototype.addEventListener;overwriteAddEvent(addEvent)}`;
-				js_inject += '{' + passive_event_listeners + '}';
-			}
-
-			// Use slowed timers by default
-			if (me.record.get('slowed_timers'))
-			{
-				const slowed_timers = `window.setTimeout=window.setTimeout;const __setTimeout=window.setTimeout;window.setTimeout=function(func,time){let a=time;return a<100&&(a=100),__setTimeout(func,a)};`;
-				js_inject += '{' + slowed_timers + '}';
-			}
 
 			// Scroll always to top (bug)
 			js_inject += 'document.body.scrollTop=0;';
diff --git a/app/view/add/Add.js b/app/view/add/Add.js
index dda3c3d1..cbe8ba54 100644
--- a/app/view/add/Add.js
+++ b/app/view/add/Add.js
@@ -198,6 +198,7 @@ Ext.define('Rambox.view.add.Add',{
 									   ,checked: me.edit ? me.record.get('passive_event_listeners') : true
 									   ,uncheckedValue: false
 									   ,inputValue: true
+									   ,hidden: Ext.getStore('ServicesList').getById(me.record.get('type')).get('passive_event_listeners') === false
 									}
 									,{
 									    xtype: 'checkbox'
@@ -206,6 +207,7 @@ Ext.define('Rambox.view.add.Add',{
 									   ,checked: me.edit ? me.record.get('slowed_timers') : true
 									   ,uncheckedValue: false
 									   ,inputValue: true
+									   ,hidden: Ext.getStore('ServicesList').getById(me.record.get('type')).get('slowed_timers') === false
 									}
 									,{
 										 xtype: 'checkbox'