Lag in saving captures between first and consecutive captures on motion detected

[krakers09]

Describe the bug
I realised that when motion is detected there is a 10-15s lag between 1st and consecutive captures in saving to the disk. There is no lag in taking captures, just in saving them. I can see the same applies to MQTT publishing (probably waiting to an image?).

Even though there's 12s difference in file saving date, they are consecutive captures with 1s difference. The rest of captures are saved as they are captured. I don't know how to troubleshoot this issue?

Expected behavior
Captures to be saved as they are captured.

Operating System and Device (please complete the following information):

• Host system: Linux VM
• OS: Debian 10.6
• Installation Method: Docker

Additional context
Files are being saved to SSD drive.

[krakers09]

I've found a log for this time, but it does not tell me much

12/01/2021 08:38:16.940 INFO [trivial] HullExpositor: activity detected from (1021,188) to (1046,221)
12/01/2021 08:38:16.940 INFO [trivial] Heuristic is valid; numberOfChanges: 32, Sequence duration: 2
12/01/2021 08:38:17.326 INFO [trivial] Executing IO devices for 1 detection(s)
12/01/2021 08:38:17.326 INFO [trivial] IoDisk: saving image 1610437096_6-940295_front_garage_1021-188-1046-221_32_535.jpg
12/01/2021 08:38:17.382 INFO [trivial] IoMQTT: sending message...sent
12/01/2021 08:38:17.514 INFO [trivial] HullExpositor: activity detected from (1001,138) to (1135,250)
12/01/2021 08:38:17.515 INFO [trivial] Heuristic is valid; numberOfChanges: 121, Sequence duration: 2
12/01/2021 08:38:18.131 INFO [trivial] HullExpositor: activity detected from (1011,122) to (1150,306)
12/01/2021 08:38:18.131 INFO [trivial] Heuristic is valid; numberOfChanges: 68, Sequence duration: 2
12/01/2021 08:38:18.731 INFO [trivial] HullExpositor: activity detected from (981,125) to (1187,382)
12/01/2021 08:38:18.731 INFO [trivial] Heuristic is valid; numberOfChanges: 473, Sequence duration: 2
12/01/2021 08:38:19.324 INFO [trivial] HullExpositor: activity detected from (978,123) to (1199,453)
12/01/2021 08:38:19.324 INFO [trivial] Heuristic is valid; numberOfChanges: 330, Sequence duration: 2
12/01/2021 08:38:19.917 INFO [trivial] HullExpositor: activity detected from (960,108) to (1161,470)
12/01/2021 08:38:19.917 INFO [trivial] Heuristic is valid; numberOfChanges: 569, Sequence duration: 2
12/01/2021 08:38:20.516 INFO [trivial] HullExpositor: activity detected from (942,106) to (1071,461)
12/01/2021 08:38:20.516 INFO [trivial] Heuristic is valid; numberOfChanges: 1649, Sequence duration: 2
12/01/2021 08:38:21.132 INFO [trivial] HullExpositor: activity detected from (850,96) to (999,430)
12/01/2021 08:38:21.132 INFO [trivial] Heuristic is valid; numberOfChanges: 3345, Sequence duration: 2
12/01/2021 08:38:21.723 INFO [trivial] HullExpositor: activity detected from (710,88) to (978,396)
12/01/2021 08:38:21.723 INFO [trivial] Heuristic is valid; numberOfChanges: 4362, Sequence duration: 2
12/01/2021 08:38:22.315 INFO [trivial] HullExpositor: activity detected from (609,78) to (869,369)
12/01/2021 08:38:22.315 INFO [trivial] Heuristic is valid; numberOfChanges: 922, Sequence duration: 2
12/01/2021 08:38:22.953 INFO [trivial] HullExpositor: activity detected from (533,71) to (821,367)
12/01/2021 08:38:22.953 INFO [trivial] Heuristic is valid; numberOfChanges: 5452, Sequence duration: 2
12/01/2021 08:38:23.530 INFO [trivial] HullExpositor: activity detected from (430,66) to (702,343)
12/01/2021 08:38:23.530 INFO [trivial] Heuristic is valid; numberOfChanges: 5217, Sequence duration: 2
12/01/2021 08:38:24.118 INFO [trivial] HullExpositor: activity detected from (324,76) to (611,316)
12/01/2021 08:38:24.118 INFO [trivial] Heuristic is valid; numberOfChanges: 881, Sequence duration: 2
12/01/2021 08:38:24.717 INFO [trivial] HullExpositor: activity detected from (248,73) to (643,301)
12/01/2021 08:38:24.717 INFO [trivial] Heuristic is valid; numberOfChanges: 4347, Sequence duration: 2
12/01/2021 08:38:25.335 INFO [trivial] HullExpositor: activity detected from (200,77) to (533,301)
12/01/2021 08:38:25.335 INFO [trivial] Heuristic is valid; numberOfChanges: 4835, Sequence duration: 2
12/01/2021 08:38:25.928 INFO [trivial] HullExpositor: activity detected from (244,87) to (436,308)
12/01/2021 08:38:25.928 INFO [trivial] Heuristic is valid; numberOfChanges: 2649, Sequence duration: 2
12/01/2021 08:38:26.517 INFO [trivial] HullExpositor: activity detected from (87,81) to (351,297)
12/01/2021 08:38:26.517 INFO [trivial] Heuristic is valid; numberOfChanges: 2966, Sequence duration: 2
12/01/2021 08:38:27.149 INFO [trivial] HullExpositor: activity detected from (168,83) to (276,266)
12/01/2021 08:38:27.149 INFO [trivial] Heuristic is valid; numberOfChanges: 1333, Sequence duration: 2
12/01/2021 08:38:29.887 INFO [trivial] Executing IO devices for 17 detection(s)
12/01/2021 08:38:29.887 INFO [trivial] IoDisk: saving image 1610437097_6-515234_front_garage_1001-138-1135-250_121_282.jpg
12/01/2021 08:38:29.947 INFO [trivial] IoMQTT: sending message...sent
12/01/2021 08:38:30.448 INFO [trivial] IoDisk: saving image 1610437098_6-132034_front_garage_1011-122-1150-306_68_623.jpg
12/01/2021 08:38:31.009 INFO [trivial] IoDisk: saving image 1610437098_6-731608_front_garage_981-125-1187-382_473_623.jpg
12/01/2021 08:38:31.144 INFO [trivial] IoMQTT: sending message...sent