Today I made some optimizations to our shadow styles reducing the number of passes that are made. Visibly you shouldn't notice any changes, but it should give a slight performance increase. This will affect third-party UI's as long as they are using the default shadow styles. It won't increase performance as much as completely disabling text shadows, but should help.
These changes should go out with the next game update.
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(Rothgar) Re:How in the world can a chat window be so unoptimized?
