Am I the only one experiencing this? almost 5 times a day, my mac suddenly heats and lags. Then, after checking at the activity monitor, there is this WebThumbnailExtension Web Content eating all of my ram, adding up to 6GB of swap. I did manual quit to make it normal. How can i get rid of this? It happens since my update to sequia.
[Re-Titled By Moderator]
MacBook Air 13″, macOS 15.0
I have this issue as well. Currently, in order to work, I have the activity monitor permanently open to every so often force quit the number of 'WebThumbnailExtension' that open varying between 1Gb to 3Gb. If I do not do this, my Mac Pro, with 32Gb of RAM, is crippled and unusable.
I am beyond frustrated.
I have this same issue, but multiple "WebThumbnailExtension Web Content" show in Activity Monitor. Does not appear to be linked to Safari (closing Safari does not end those processes). I also have "WebThumbnailExtension". I can't seem to find much about any of this, but it has started about a week after updating to Sequoia.
If I close Safari, then force quit every instances of "WebThumbnailExtension Web Content" from Activity Monitor, the problem disappear. I tried using other browsers without issue, then reopened Safari and the problem pop up again...
WebThumbnailExtension causing high RAM usage and lag on macOS Sequoia
