We continue to experience increased invoke timeouts and elevated latencies for a small proportion of AWS Lambda functions in the EU-WEST-1 Region. The issue affects a subset of functions making API calls to other AWS services within the region. At this point we have not identified any workarounds for affected Lambda functions, and we continue to investigate possible networking issues in a section of the AWS Lambda compute subsystem. We will make more information about our mitigation plan available as soon as we have more information to share.