Yeah it was annoying for me when I first got World. Thank god Steam let me remap everything. I'm using a PS1 controller with a usb connector I had from like 15 years ago, but everything is perfect now. I had to remap the R1/R2 buttons + L1/L2 buttons because MHW switched them for some reason and then switch in-game options so that R1 was guard/weapon moves and R2 was run, with L1 aim slinger and L2 was item wheel.