Have the same problem and unlike @_j I don’t think it is a “coding problem”.
Made a simple translation prompt and tried increasing the number of text inputs to translate.
On the 46th request the gpt-3.5-turbo chat completion hung for 10 minutes before timing out.
The OpenAI rate limit documentation states that I get 90000 tokens per minute and 3500 requests per minute.
The 46 requests and likely only 1000-2000 tokens used for my test should not cause an issue.
Think something else is going on.