almost 3 years ago - Smin1080p - Direct link

You are using inefficient vehicles for the vehicles you are trying to research.


For example, two of the vehicles in your line-up are effective up to Rank V. Not Rank VI and VII:

almost 3 years ago - Smin1080p - Direct link

You can use any of these vehicles to get the right efficiency to research the vehicles you are going for. Given you are researching the HSTV-L and F-4C, you should have plenty of options.



Of course you can remain using Rank IV if you want too, but it will take considerably longer playing vacuoles 2 ranks lower and that's why you are seeing low rewards.