OK Newbie I've built a Cube based benchmark and been disappointed with performance!

Could you try the benchmark to see what cubeMark your hardware gets and to test if it’s just my hardware not working well with Unreal 4.6.1?

The latest build is postfixed 461.zip but comes in at a staggering 100+ Mb zipped, previous 4.6.1 build zipped to 47 Mb and the original 4.1 version was only 28 Mb zipped.

Oh and what system specs?

My PC -> Windows 8.1, CPU AMD FX8320, 16 GB RAM, GPU AMD 7900 series 3GB RAM.