Hello and welcome to the forum jhenna01.
Your profile shows that you're using Monarch v6. Never used it myself (I went from v5 to v8), but those "server busy" messages are usually the result of reading from or writing to network drives. While it's not the ideal solution, it's best to avoid that by reading from or writing to only a local drive and then copying the final output to the network location. Is that what's happening now for you, or is it something else?