acidrain_lnx CLS has got worse over the last few days, that is correct. However, it doesn't seem to have increased by an amount which should be causing concern, you're still passing Core Web Vitals. I'm also not seeing any recommendations when testing URLs in Ezoic lab. We could revisit this if the CLS scores continue getting worse but for now we just need to give Leap some time to optimize on your site and for optimized versions of the site to begin storing in the cache

You're possibly oversimplifying things here stating 'Ezoic and ads are the root cause' -- it's most likely more nuanced than that and we have thousands upon thousands of sites using our ad services without these CLS issues, so it's a site specific issue not an overarching one like you're suggesting. We want to avoid those kinds of generalities and focus on the facts when possible.

To take a step back here, we really suggest utilizing the tools available as part of LEAP.
The first place to start is the 'my scores' tab. When you go to CLS, you're seeing around 75% of real-user visits to the site passing the CLS metrics. You can then look at the individual pages that reported 'poor' and then test in the Ezoic lab (to the right of the URLs being reported).
From there, you can see suggestions to improve the scores as well as testing results to see if there's an anomaly with certain visits. In this case, I tested the poorest performing URL, and it's actually passing the tests - indicating that it's most likely an isolated issue that's working itself out as LEAP optimizes and caching hits at a higher rate (see screenshot).

We also need to remember that CWV metrics account for around 2% of all ranking factors --- and as long as you haven't seen a dip in user engagement, the scores aren't going to be an indicator of anything wrong with the site necessarily.

acidrain_lnx Sure, just a heads up, we did just make a change with Leap on the backend yesterday which should contribute to better LCP performance and you should see the effects of this come into play in the next few days and hopefully better LCP scores!

Update:
CLS in Desktop is growing day by day:

My score has changed in desktop from 89 to 65 in 2 weeks and now google mark all my webspages as bad:

Side rails are disabled now.

acidrain_lnx What was the thinking behind turning off side rail ads on the site? I don't see how these ads would be contributing to bad CLS scores. I am going to contact the Leap team and see if they have any ideas though and will let you know what they say

acidrain_lnx Got it, thanks for confirming. As I mentioned, I've asked the speed team to look into it and we'll let you know when we hear back from them

acidrain_lnx Hi so the team got back to me and identified that the tech you're using to add comments to your articles adds the comments later in the load, which is affecting CLS. We have made a change to exclude the comment script from being lazy loaded, which should lead to CLS improving over the coming days. However, you may want to replace/remove this technology to further help improve CLS.

Thanks for the update. Don't forget CLS is taken over a 28 day rolling average period, so it may take a little time for things to even themselves out. That's normal behaviour

Thanks:
Update March 20:
Smartphone: From 89 to 66 in 2 weeks
Desktop: From 89 to 60 in 2 weeks

CLS from 100/100 to 20/100 .........

acidrain_lnx
Do any of these apps apply solely to your desktop versions of your pages?
https://pubdash.ezoic.com/leap/measure/technologies

Taking a good look into these pieces of tech could lead you to the variable coming into play here. Do you know of any other variances between your desktop and mobile pages in terms of CLS?

Is there also a reason you are not resizing your images using the Leap tool? When looking at your worst performing pages, you have a massive image taking up 90% of the viewport. Optimizing this image should really be helping with your CLS scores -

acidrain_lnx Hey,

One recommendation I'm seeing in pagespeed insights which'll help with CLS is to enable resize images in Leap - is there a reason for turning this off? If not, I'd turn it on!

In terms of the images not loading WebP formats, I can see that in Pagespeed Insights, let me ask the team why that is happening

Ethan

Hello Ethan: For CLS I'm doing some changes in my website regarding images. I can't enable rezise images because the resize leap quality is really really bad. I have hundred of images with shell/windows commands and that images when Leap resize them, the characters inside the images are not visible because the quality is really bad.That is the reason because I can't enable it. But I thinsk this is not a huge problem, because if I remove Ezoic my CLS is 100/100...

I think my changes are working slowly with CLS...

Lets see next days the CLS graph....
Regs

acidrain_lnx Heads up, the team are still looking into the WebP conversion issue for you and I'll let you know what they come back with.