On that rig, you should have fullspeed even with LLE (I think), and LLE wiill stutter if the game isn't at fullspeed. However, you'd probably be better of using a build with the Xenoblade HLE Patch added, as that shouldn't give you problems, and has the sound stretching effect which stops audio stuttering.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
