From: Zagreb, Croatia
And here is the Soviet railheads. This information will show if you switch to showing rail before clicking end of turn. This feels a bit cheesy, and not sure it is WAD. The information is there anyway, it can be gotten by hovering over every single hex, but it is a very painstaking process, this is much faster.
I reported this in developer's forum...
Prior Preparation & Planning Prevents Pathetically Poor Performance!
A & B: WitW, WitE, WbtS, GGWaW, GGWaW2-AWD, HttR, CotA, BftB, CF
P: UV, WitP, WitP-AE