Elasticache nodes taking long time to create

We've been creating Elasticache Redis clusters for close to a year, but this month we've been encountering errors due to Elasticache taking well over an hour to create a new cluster.

The clusters are using engine version 7.0.5, with a node type of 'cache.t4g.micro'.

Has there been any changes that could have caused this significant increase in creation time?