I ran the update last night hoping the 18.4.1 would fix the issues I was having with Sea of Thieves and 18.3.4 ....18.4.1 SEEMS to have fixed the problems with SoT (lots of game and video driver crashes, artifacting, lighting errors that were unique to AMD) ....
HOWEVER: there is HUGE mouse stuttering. This is NOT unique to my machine, as I discovered dozens of posts in the last 12 hours about it on reddit. The mouse stutters uncontrollably/stalls while moving the cursor. Turning ON mouse trails seems to have fixed the behavior.
Win10 version 1803 build 17134.5
AMD FX8350 8 core @ 4.0GHz
XFX AMD RX580 8GB
Mouse(relevant hardware disturbed): Logitech M502 wired mouse.
Any input on this is greatly appreciated. I'm kind of miffed I bought an AMD card. I would have gotten an geforce (i swore I'd never go AMD again) but the card I wanted just wasn't easily available.