setSubscriptionDuration issue

version: 3.3.4

RN version: 0.65 

 Expected behavior
 - if i set setSubscriptionDuration(0.1) i should get response 10 times per second

Actual behavior
- sometime response are returned only 9 times per second 

Steps to reproduce the behavior -
set setSubscriptionDuration(0.1)  and check returns per second
