There are no known conflicts. In fact I assisted two users just yesterday that were using Divi. I suspect it may be a combination or maybe the memory allocated to PHP is being exhausted. I would try increasing the memory. Here’s an excellent post on how to do it.. There are several methods which one that will work really depends on the web host. I suggest starting at the top and working your way down the list.
In addition to trying that, please share your System Info with me. Create a Remote Viewing URL and share it with me as a private reply.