Tripled the saving speed [skip hazardlib]
Tripled the saving speed [skip hazardlib]


Former-commit-id: 404e4323ba4cc388e73750b3a7d8393e6669d3aa [formerly 404e4323ba4cc388e73750b3a7d8393e6669d3aa [formerly 7b101075b7659ad73213a288915516ddee0fb347]]
Former-commit-id: acb665b047dc1e82f9a4aa9589faeb83e89ce41f
Former-commit-id: e1665adf1e7c7fbfdd19d46e94ba5154397d37ad
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine