Action Scheduler flooding MySQL

This isn’t a small shared account, this is a larger 12 CPU dedicated server with just one WP install, not shared in anyway, we are running into stability issues from action schedule due to taxjar_process_queue.

[0x00007f4ac9c134d0] as_next_scheduled_action() /home/nginx/domains/domain.com/public/wp-content/plugins/taxjar-simplified-taxes-for-woocommerce/includes/class-wc-taxjar-transaction-sync.php:153

https://gist.github.com/jcatello/59370db9e968bb3b29b043ee4b265be6

Seems these are being fired in bulk and requires some throttling.