repair for system in thread that can be deactivated
#100
| Job | Run time |
|---|---|
| 28m 55s | |
| 19m 46s | |
| 26m 26s | |
| 12m 48s | |
| 16m 37s | |
| 8m 54s | |
| 12m 11s | |
| 8m 28s | |
| 11m 34s | |
| 15m 17s | |
| 12m 9s | |
| 15m 52s | |
| 12m 54s | |
| 3h 21m 51s |