Honestly it is normal, they take an age and are allowed to do it, they face no accountability at all. There are red cases and green cases as they are known. Red cases are when a remand in custody is wanted by the police and an immediate charging decision needed on what is the evidential threshold test, which means further enquiries will be needed but there is enough for now to remand a suspect while that work is done.
Green cases are where suspects are bailed from the police station for those further enquiries to be done and the additional evidence obtained. That then is sent to CPS on what is known as the full code test. Any green case sits with the cunts for months and months, they seem to work under no pressure or urgency or accountability at all.
CPS rules on charging and threshold and full code test here:
www.cps.gov.uk