Focus hunting, or its lack of, depends on the lens you are using.
If you want fast focusing lenses then choose the newer f2.0 primes, the 80mm as well.
For zooms, the recent ones are usually all fast, 10-24mm, 18-55, 16-55 even more.
Also, focus hunting can happen if you shoot in dark environments. This is normal.
The X-H1 is very capable when it comes to AF speed, so coupled with a good lens you should experience among the best of what's currently possible with cameras.