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nrf52832 disconnecting frequently getting error 0x3b in nrfConnect

I'm using the ble_app_hrs example code  and added a new custom services with multiple characteristics . conn.interval 10ms- 15ms and need to get maximum throughput so i set MTU size 160bytes packet and sending data in 1ms continuously but  after 2-3 minutes its disconnecting automatically getting error 0x3b in nrfconnect app and error Disconnected, reason 22 getting in nrf52832 log.