I've seen people have decent results with as low as 25mg tren ace per day. However, most are running tren at least double what they're running their test at. Right now, I'm on 350mg of Tren Ace per week and 300mg Test E and that is honestly just about right for me. I've run tren lower and pretty much experienced nothing. I'd say if you're having bad sides on Tren E, get you some Tren Ace and run it about double what you're running it now. You'll have better results. Tren melts fat off for me.
Every day or even EOD pinning of lower amounts of Tren seems to keep the sides at bay much better.