Screen issues playing minions

So I just started a minion build. Using unearth and firewall together causes so much stress on the system that it causes the screen to have a seizure. It'll flash and spit and sputter trying to get a clear picture. It can't keep up. I've tried every graphics settings, performance settings and anything else I can think of to get it to stop but it won't. It didn't do this on my gemling merc using thunder and ice hearlds and that was more intensive I feel. Can we please look at console performance and do some tweaks to get the game to run more smoothly?