Not just Osther AI , Soviet AI need to get fix too. I choose normal Soviet AI, when i play 2 vs 2 , the soviet created 3 naval , more than 15 or 20 Su 78 (i forgot the name, it's a light amour, build on chassis of t70, good for anti tank) and many other unit such as t70 and strek. Someone swapped something wrong, normal ai fighting like expert AI.