[Q] Searching for a suitable ROM for Galaxy S3 topic

I've tried android 4.1.2 and 4.2 and 4.3 and earlier today I flashet The kitkat 4.4.4 developes by arter .. But all of them were laggy and slow .. Do anyone know A custom rom for galaxy s3 GT-I9300 which is fast and has a good UI ?
Thanks ...

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