By default, Wizzy splits the number of products into a chunk of 2000 and processes 7 batches at a time for sync. You can specify the chunk of products according to your requirement. Firstly specify the number of products in each chunk which can be between 50 to 3500 and in the next field, mention the number of batches you want to sync.
For Example: If your store has 14,000, as mentioned below you can enter 2000 in the first field, which specified how many products will be put in sync at a time. Similarly in the next field, you can decide the number of batches, i.e. how you want to divide your 14,000 products into several partitions. Here we considered 7 batches with 2000 products in each batch which makes it 14,000 products in total. You can decide how many products you want to sync in one go.