Helicopter PVE Grind

Hello guys am i only one who noticed reduced research points in heli pve mode when i started grinding USSR first helicopters in 1 single match i was gaining around 15-25k rp now for modules i barelly in top tier get 8-9k sitting at first place bombing,killing planes,convoys and waves 45-1hr long matches.
That’s strange because just now for Igla’s i need 33k rp to research not to mention other modules for example.

5 modules bought with ge because its unbearable grind as we know.