UPDATE.
1. VERGE clearnet version was installed to reduce amount of orphans blocks found. It is safe to mine with less orphans now.
Hopefully it will improve accuracy as well!
Does it mean that orphan rate is not included in profit prediction? This would explain a lot, as suggested before.
Hope clearnet helps, because these orphans are anoying. However, I thought that ist due to relatively low hashrate in comparison to whole network, am I wrong?