I’ve compiled optimized versions of MAME 0.174 for Pi3 and Pi2. Sadly it appears to have become a little slower since I did this for 0.171. A little slower has a large impact on a board as low powered as the Pi’s.
I’m now busily compiling versions 173, 172, 171 and 170 for each board and will be running some benchmarks to see just how much slowdown there is and when it started.
For now you can get the 0.174 version from my Raspberry MAME download page.