Dont set group for optional fields (#528)
#1206
| Job | Run time |
|---|---|
| 1m 28s | |
| 1m 14s | |
| 1m 16s | |
| 1m 14s | |
| 1m 16s | |
| 1m 32s | |
| 1m 30s | |
| 1m 40s | |
| 1m 30s | |
| 1m 32s | |
| 1m 59s | |
| 2m 7s | |
| 3m 16s | |
| 2m 14s | |
| 2m 23s | |
| 26m 11s |