Pool stopped writing after ~300,000 txns from 5 clients.

Environment:
indy-node 1.3.364
view change - on
logLevel - info

Steps to Reproduce:
1. Setup the pool of 25 nodes.
2. Run the load test from 5 clients.

Actual Result:
One of nodes was lagged on 291,395, the rest ones have wrote 307,554 and have stopped writing.

Logs were shared with dsurnin, archives names: view_change_info_log_pool_crashed_5_clients_p1.7z, view_change_info_log_pool_crashed_5_clients_p2.7z view_change_info_log_pool_crashed_5_clients_p3.7z

UPD: The issue was reproduced with load test from 1 client. Logs shared with dsurnin, archives names:
low_load_1client_stopped_writting_p1.7z
low_load_1client_stopped_writting_1315_p2.7z
low_load_1client_stopped_writting_1315_p3.7z

Acceptance Criteria:

• Find the cause, determine a Plan of Attack, and log the new task / epic.