Hi – I’m sorry to hear you’re facing difficulties when working with recurring events.
Can you give me a sense of the sort of recurring events this impacts? Is it all of them, or have you noticed that it’s only when an pattern that would generate a large number of instances is used?
I wonder as well if a plugin or theme conflict might be at work. Is it possible to try deactivating all other plugins except for The Events Calendar/Events Calendar PRO and switch to a default and completely unmodified theme such as Twenty Thirteen – then check if the same problem arises under those conditions?
Thanks!