CLS going significantly down

ferferfer

Hello team- My desktop CLS has been going down quite a lot in the couple of weeks. When I test the same pages on GTMetrix and/or the Leap Lab they all pass the test with great results. I am not sure what's causing the CLS to drop. Maybe the floating video units? Please advice. Thank you

ferferfer

I am not sure if leaps accumulates data for 28 days then it is refering to a previous status on this page but when i run the lab test on these pages they all come back with great results. attaching example

ferferfer

also please notice, I am trying 2 different layouts one with sidebar another one without the sidebar. thank you

HarryB

Looks like you started to see a decline in your CLS metrics around 5 days ago - can you think of any updates that you've made around then? This shouldn't be related to floating videos, as - due to the float - they shouldn't cause any shift.

ferferfer

HarryB thank you. I made some changes to the layout such as a sticky nav and also added a search and Facebook button to the top menu. I removed those a couple of days ago as I thought that was causing the decline as the sticky nav was affecting the layout shift.

Today, I also deactivated slow loading font option and turned off the script delay execution (I turned them on a few days ago... deactivating today to see if it was causing the problem)

Thank you!

Tucker_P_Ezoic

Disabling script delay is going to negatively affect CWV metrics.

The 'sticky' menu / navigation might be contributing to the issue, or even potentially 'testing' a different layout.

ferferfer

Tucker_P_Ezoic I took out the sticky menu lets see what happens. I believe it takes a few days to gather new data from update layouts etc...? thank you

Charlie

ferferfer
Correct. Leap analyses real user data so it will slowly update and change over the next few days

ferferfer

Thank you everyone. CLS in desktop has not improved yet, even considering I went back to the settings I had before the decline. I guess I will give it some more time and see... not sure if you guys have any further recommendations. Thank you

HarryB

CLS is measured over a 28 day period, so it may take more than a few days for things to improve. All live checks on the site appear to be returning good CLS numbers - let's keep an eye on things over the next few days 🙂

ferferfer

HarryB Thank you, everyone. You are great

ferferfer

Still bad CLS on desktop, waiting to see some improvements, I will give it 1-2 weeks more and see if it improves as gtmetrix and pageinsights come back great for most pages. thanks again, guys

ferferfer

hey guys. I hope you are well. I wonder if this type of ad is affecting the CLS (see attached image) What are they called? Is there any way to optimize these containers? thank you!

Charlie

ferferfer
Hi there,
These are the new way of showing ads and they will not have more of a negative impact on CLS - they will, however, keep view-ability high while showing less ads. So these are very beneficial to you in terms of UX and rev

ferferfer

Thanks Charlie. I am not really sure what's causing the CLS problem. When I tested the pages on GTMETRIX it gave me an A for most pages and passed all the core web vitals... I am not sure at this point. Let me know if you have any suggestions please thanks

Tucker_P_Ezoic

We'd definitely advise against using GTMetrix to make any decisions on site speed / UX / core-web vitals, just to be clear.

Regarding CLS, you can use the LEAP dashboard to look at pages that are not performing well for that particular CWV metric, and then use the Ezoic chrome extension to test further and look at the potential cause.

ferferfer

Tucker_P_Ezoic Thank you. I also use pagespeed. They both come back without significant issues when testing most pages, so the problem with the CLS is some shifting occurring after the page was loaded.

Tucker_P_Ezoic

Again, you can use the LEAP dashboard to both diagnose why a CLS issue might be occurring and take action accordingly.
The guides at support.ezoic.com will be helpful as well, you can search CLS there and find several to help you along.

ferferfer

Tucker_P_Ezoic Hi Tucker, I am using ofc using Leap and the Lab. I am testing a page that is returning 0.30+ CLS on mobile — these are the results when I open the test with Lab. It passed and there aren't further recommendations from Leap as the page is passing the test...

ferferfer

ferferfer considering these results, there is some shifting happening after the page was loaded