Wordpress LScache Plugin: Evaluating V4 LSC
Last Updated on: Wed, 15 Apr 2026 00:00:02 Hi, Before I raise the queries that I have, I just want to take a moment to say Thank You to the developers on both the Litespeed Cache plugin and the QUIC.Cloud CDN. Considering that these are free to use the work that you all put in is amazing. Thanks. Id also like to observe that my (admittedly fairly basic) homepage now scores 100, for both mobile and desktop, on Google PSI. Not only that but, more importantly than scores, my biggest blog post (over 10,000 words and over 50 images) when cached loads in 638ms! Thats pretty damn good! OK, on to the queries ? 1. The images on first load are displaying a grey box in place of the actual image. This is without Lazy Load activated for images. Why is it doing that? And how do I fix it? 2. There seems to be an issue with the UCSS. The Last generated time is the time that I installed the V4 update. Ive tried using the Force Cron button but the detail doesnt change. (The CCSS does appear to be working and the Last generated time is updating regularly). 3. Looking at the CSS Optimisation tab at QUIC.Cloud, all of the UCSS Recent requests have a red warning triangle and have / null /. Might this be linked to the issue noted at 2 above? Again, what can I do to fix it? 4. Im pretty sure that the first visit times are actually slower than they were with V3.6 but Ill wait until everything is working properly before testing further. The page I need help with: https://richiesroom.com/ Just answering point 1 above. Hai at Slack support has advised that using Guest Mode automatically activates Lazy Loading (amendments to this will be reviewed in subsequent versions). Further follow-up on my own questions: 1. Within the Page Optimization section there is a tab called Media Excludes. Within that tab, in the Lazy Load Image Excludes box, Ive entered the URLs for the site logo and for the main image on the Home page. And within the Lazy Load Image Parent Class Name Excludes box Ive entered the class details for featured images (in my case a simple featured-image ). This has got rid of the Lazy Load grey box issue. 2. and 3. Hai at Slack support (thanks again Hai!) indicated that the UCSS issue was probably a CSS syntax error. I went to the https://jigsaw.w3.org/css-validator/#validate_by_input site and pasted in all of my custom CSS. Do you know what it found? One surplus curly bracket! That was it! I removed this item and saved the CSS. I then went to the LSC General page and switched off Guest Mode and Guest Mode Optimization. Save Changes. Next to the Page Optimization page and the CSS Settings tab. Here I turned off CSS Combine and Generate UCSS, cleared the URL list, and used the Click to redirect Infinity symbol. Then turned off Load CSS Asynchronously, cleared the URL list, and again used the Click to redirect button. Save Changes. Then did a Purge All and a Purge All ? CCSS from the LSC menu bar button. Then checked in File Manager within cPanel ? /wp-content/litespeed ? and confirmed that both the UCSS and CCSS folders had been removed. Then went back and switched all of the above options back to On again and Save Changes. Visited a few pages on my site. Refreshed the Dashboard page in LSC and clicked on Force cron for Unique CSS. And ? Bingo!All 3 of the cron items (Critical CSS, Unique CSS, and LQIP) now have Last generated entries. Checked in File Manager and confirmed that the relevant folders had been created and the CSS files created ? they had. Checked the following morning (now, as I write this post) and everything still seems to be working and there are no errors being displayed in the Recent Requests section of the CSS Optimization tab at QUIC.cloud. I cant quite believe that one surplus curly bracket caused all of that hassle, but there you go. I hope that the above may prove useful to anybody that has similar issues. 4. Ill continue to monitor the performance position.
LiteCache Rush: Speed comes from using less, not from doing it faster
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