Keyboard type "Alphabetic" makes typing very laggy

[sajidjutt7]

By default keyboard type is numeric. But i want it to be alphanumeric.
When i change keyboard type as
txtOTPView.keyboardType = .default
That makes the whole typing experience very laggy and slow and glictchy.
Keyboard takes time to shift focus from 1 field to another.
This is not happening in numpad key. NumPad keybaord is working fine and speedy.
1 thing more - default keyboard makes Keyboard to Caps On on every new entry. like keyboard shift focus from 1 field to another. It makes keyboard Caps On