I noticed stuttering and lag when I played videos on the latest version of Sequoia (15.4.1) After trying a few different fixes (disable battery saver, enable hardware acceleration) I tried to do a reinstall. Now I can't even get it to install. It either loops on "preparing" or gives me that it can't connect to my network. I added it to the "allow incoming connections" under the firewall but it doesn't work. The previous times I've downloaded Opera on a Mac I've never had this issue.
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