Don't assume that SubString has pointer and copy instead
#979
| Job | Run time |
|---|---|
| 1m 10s | |
| 3m 22s | |
| 2m 27s | |
| 2m 2s | |
| 2m 34s | |
| 4m 45s | |
| 6m 2s | |
| 2m 5s | |
| 2m 9s | |
| 2m 9s | |
| 2m 16s | |
| 1m 18s | |
| 2m 6s | |
| 1m 47s | |
| 1m 55s | |
| 9m 19s | |
| 8m 59s | |
| 1m 41s | |
| 1m 38s | |
| 1m 53s | |
| 2m 21s | |
| 2m 3s | |
| 1m 58s | |
| 2m 49s | |
| 2m 40s | |
| 3m 24s | |
| 2m 39s | |
| 2m 47s | |
| 3m 42s | |
| 2m 58s | |
| 3m 31s | |
| 2m 42s | |
| 2m 47s | |
| 3m 36s | |
| 3m 5s | |
| 1h 44m 39s |