I had the pleasure to participate in UE4 beta in 2013 near christmas time (still got my christmas card ), although very briefly. Why? Back then UE4 would melt my laptop.
Wish I was kidding.
The majority of my feedback was due to performance issues on my mid-range laptop, that wasn’t close to being productive with this tool, but would run without hassle any single other one.
Back then, idle or not, the editor would have my i5 to >90% usage nonstop, high memory usage with severe memory leaks, add visual studio + build process to the equation and you got a development train wreck. Some updates later it cooled down a little (to ~80%), memory leaks was reduced but, just wasn’t there for me.
Got back to it now sort of one year later and I’m really pleased with the improvements the team made, editor is idling at 3% until it reaches 0%, on focus + activity goes up to 25-30% at most, memory usage is extremely low in comparison and no idle memory leaks. Now, this is some jet fuel rocket material! wink