Hybrid glass mode means glass will use transparent shadows instead of caustics. It is very confusing term and hopefully it will be renamed soon. It is feature similar to affect shadows checkbox in VrayMTL. In this particular case, there would be almost no difference between caustics and transparent shadows for glass windows, but transparent shadows are a LOT faster than tracing caustics.
HDcache is interpolated GI method that is very fast with little loss of accuracy. Similar to Light Cache in Vray in some ways. Path Tracing is brute force GI solution. So having path tracing set for both primary and secondary GI means complete GI solution will be computed using brute force.
Having primary GI set to Path Tracing and secondary to HDCache means only primary bounce will be brute forced, and interpolated GI will be used for all secondary bounces. That will speed things up a lot, especially for interiors.
Thank you very much Ravalanche.! I get it. I will try to implement these moments s renderings of their future. I really noticed the difference. You and a team of developers CORONA - well done! Good luck to you, I am glad that I have the opportunity to participate in this and try this renderer =)
Now I will share my observations and renders of the developers and alpha testers here.I would like to wish all of you success!