DataHub - API calls high CPU usage

how to reproduce the issue step by step?
I tried on WP76 with the mangoh source, I don’t see 20% cpu load:

root@swi-mdm9x28-wp:~# app status | grep data
[running] dataConnectionService
[running] dataHub
root@swi-mdm9x28-wp:~#
root@swi-mdm9x28-wp:~# top

top - 16:58:52 up 9 min,  1 user,  load average: 2.28, 1.95, 1.06
Tasks: 197 total,   1 running, 196 sleeping,   0 stopped,   0 zombie
top - 16:58:55 up 9 min,  1 user,  load average: 2.28, 1.95, 1.06
Tasks: 197 total,   1 running, 196 sleeping,   0 stopped,   0 zombie
%Cpu(s):  1.7 us,  6.6 sy,  0.0 ni, 90.4 id,  1.3 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :   158792 total,     6452 free,    75924 used,    76416 buff/cache
KiB Swap:        0 total,        0 free,        0 used.    65332 avail Mem

  137 root      rt   0       0      0      0 S  4.5  0.0   0:01.44 cfinteracti+
 3378 root      20   0    3004   1256    880 R  2.6  0.8   0:00.23 top
    7 root      20   0       0      0      0 S  0.3  0.0   0:00.47 rcu_preempt
   22 root      20   0       0      0      0 S  0.3  0.0   0:01.87 kworker/u2:2
  137 root      rt   0       0      0      0 S  0.3  0.0   0:01.45 cfinteracti+
  139 root      20   0       0      0      0 S  0.3  0.0   0:02.49 kworker/u2:4
    1 root      20   0    2324    600    536 S  0.0  0.4   0:01.18 init
    2 root      20   0       0      0      0 S  0.0  0.0   0:00.01 kthreadd
    3 root      20   0       0      0      0 S  0.0  0.0   0:00.26 ksoftirqd/0
    4 root      20   0       0      0      0 S  0.0  0.0   0:00.16 kworker/0:0
    5 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 kworker/0:0H
    6 root      20   0       0      0      0 S  0.0  0.0   0:02.13 kworker/u2:0
    8 root      20   0       0      0      0 S  0.0  0.0   0:00.00 rcu_sched
    9 root      20   0       0      0      0 S  0.0  0.0   0:00.00 rcu_bh
   10 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 khelper
   11 root      20   0       0      0      0 S  0.0  0.0   0:00.02 kdevtmpfs
   12 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 netns
   13 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 perf

root@swi-mdm9x28-wp:~# cm info
Device: WP7605
IMEI: 353532100020465
IMEISV: 6
FSN: 2A917285070404
Firmware Version: SWI9X07Y_02.28.03.05 000000 jenkins 2019/07/08 11:04:16
Bootloader Version: SWI9X07Y_02.28.03.05 000000 jenkins 2019/07/08 11:04:16
MCU Version:
PRI Part Number (PN): 9908705
PRI Revision: 002.006
Carrier PRI Name: SIERRA
Carrier PRI Revision: 001.032_000
SKU: 1104208
Last Reset Cause: Power Down
Resets Count: Expected: 59 Unexpected: 0
root@swi-mdm9x28-wp:~#
root@swi-mdm9x28-wp:~# legato version
19.02.0_a2f3e0fd302634e5deaac258dcf9b3fd