Higher Response time in one Server during Load Test: siebel

We have performed load test in stress test environment and we see different response time behaviour in different servers
We have servers SHEM2 and SHEM5 with same load of test below is the one example of transaction, where on SHEM5 server all the response times are high

for SHEm2,
Transactions Name: Customize Telephony
No of transactions on SHEM2: 125
Min responsetime: 2,58
Avg response time: 4,97
Max response Time: 10,53
For SHEM5,
   Transactions Name: Customize Telephony
No of transactions on SHEM2: 115
Min responsetime: 4,05
Avg response time: 8,59
Max response Time: 80,71

Verified that all the component parameters are same in SHEM2 and SHEM5.

Log attached for this transaction: