AI with different difficulties

Hello there!

I am new to the game (200 hours in, LOL) and with the constant patching increasing the difficulty of the AI, my friends and I (who normally play 3x3 vs the computer) are having a problem where 3 hard AI is easy and 3 very hard AI is impossible. We tried changing number of AIs, but 4 hard is impossible and 2 extreme is easy (I really dunno why). Is there a way to change the difficulty of 1 of the 3, so we play a 3x3 game where 2 AIs are hard and 1 AI is very hard?
Thanks a LOT! Love this forum! Love the memes!