THE LAG!

Just flashed the XXDLJ5 stock deodexed rom by Wanam. Before flashing I removed all the apps that I felt were useless/bloat. Flashed Siyah kernel 1.7rc3. Overclocked CPU to 1.5GHz. Overclocked GPU to 600Mhz. But the frequent lags when opening Phone and Contacts is still there! And very rarely when opening others apps or showing in-app transitions, but rare. Has anyone come up with a fix/ combo of rom+kernel+settings that gets rid of it?

Thanks in advance.