Hey @EVI5R8R
It does not seem if an APU will be better than a RX 560 at the moment; for example, this seems to be the best integrated graphics at the moment and it only has better reflection performance: https://gpu.userbenchmark.com/Compare/AMD-RX-560-vs-AMD-RX-Vega-8-5000-iGPU/3926vsm1415260, which could be due to ray-tracing.
The CPU of an APU would perform much better than a FX 8350 though, and you might experience better minimum frame-rates sometimes than on your FX 8350 if you get the latest APU technology. But, the link I shared seems to be a very new laptop APU.