At first, we attributed the slow printing process to a potential router issue since slow speeds are often linked to router problems. However, when we tested another printer and encountered the same issue, it became clear that the issue was not related to the router. This delay in our order processing and overall slowdown prompted us to consider whether the design of the thank you card was a factor. To test this hypothesis, we changed and simplified the design. Then, the printing speed returned to normal. That’s why we ultimately decided to proceed with the simpler design. In conclusion, the design was indeed one of the factors impacting printing speed.