[MKW] "Failed to read to/write from system memory"

[themanuel]

(02-08-2019, 12:52 PM)8times9 Wrote: Sure thing! I've been in the situation of searching through old forum posts after googling to troubleshoot an issue, and I know an answer like this is so helpful to find.

Hey, thanks for sharing that.  What kind of crashes were you having?

For some time now, I've been having this issue with MKW, one of the few Wii games I actually play, where sometimes dolphin will freeze into a black screen when loading a track, and I have to shut it down by force.  It never happens in the menus or in the middle of a race, but only when loading a track.  This is very random and not easily reproducible.  Sometimes I'll play a half hour without getting this issue.
I first thought it was the new feature: "Defer EFB Copies" because I use EFB2Ram for this game, and I even reported this to JMC47, but it turned out to be "fake news" on my part (sorry!).  I went on to try many different things and none helped.  My latest suspicion is that it has something to do with some BT passthrough issues I've been having.

UPDATE:
I eventually found that this was an issue with BT passthrough that was corrected by changing my BT adapter's driver from libusbK to WinUSB (also through Zadig).