Hi HarshLumia520,
During development, we didn't have all Lumia devices out there to test on.
The 1ghz processor seems to be the bottleneck. Right now, we're trying to get it up and running and if we do, it'll be in the 1st update.
Our apologies for the inconvenience.
We hope to resolve this asap.
Regards,
Sven. Monkube.