in Hybris cluster multiple worker threads are processing for same palce order request or add to cart request

In my application hybris cluster is set up with apache web server with ajp nio connector. Currently we are observing that sometimes (during network slowness) while customer placing orders or doing add to cart for same cart, multiple worker threads are started processing for same requests. So at that time it is creating blocked thread or sometimes placing multiple orders for same user's cart. From log files always we can see that multiple threads are doing same process. Is it possible in cluster environment to stnother thread for same request if response does not reach at time. In log we can see different thread names like below formats. Please advise.

INFO | jvm 1 | main | 2018/08/14 15:45:55.561 | INFO [ajp-nio-8009-exec-120] [95.101.2. 200]