I think API is not working for assistant right now

I’m tier 3 and using assistants for 1 month. The average time to respond after running an assistant on a thread is about 20 seconds.
Today, the waiting time has increased to an average of 3 - 4 minutes.

I’m fine with creating the thread and adding a message to it. I’m simply measuring the time of running an assistant on the thread. This should not take up to 6 minutes.

Do you have an alternative recommendation on how to speed this up?
The application is actually very simple and the input and output tokens are kept at a minimum.