Slowness, Gateway failures, Studio Builder tool loosing communication with the model

I’m new to CrewAI, but I’m really struggling with how to use it effectively. I find it very slow, and the AI building tools often report that it has lost communication with the model and then stop. I encounter similar challenges when running the automation; it returns gateway errors and never completes execution. I’m using a crew that the AI tool built, so I’m surprised by the number of errors. Am I just doing this wrong? I’d like to use this for business needs, but it’s barely working. I’ve been trying to complete the first automation for 3+ days, and it’s pretty simple.