# Timeouts
Spike uses AWS lambda (opens new window) in order to house our pdf processing software. Lambdas have the following limitations:
- payload size (6mb) and
- max duration (28 seconds)
A malformed pdf can cause our pdf processing library to grind to a halt. Unfortunately sometimes this occurs with original statements - i.e. when the bank uses a pdf creation library which produces malformed pdfs. These are the current known formats:
- The
Select.Pdf for .NET v2019.1.0
pdf writing library - which is used by these statements exhibits this problem:
In the case of the above pdfs you may see the pdf taking a long time to process and in some cases it may time out.
If timeouts occur repeatedly please contact support and we can convert the pdf for you manually.