Emulator

In what appears to be the death knell of this game ever being full speed in dolphin, it appears this game requires Full MMU emulation, rather than the MMU speedhack that it has set currently.

MMU Speedhack just crashes way too much for it to be playable, and Full MMU seems to work, but is incredibly slow, as expected.

LLE audio also seems to work.

Why would LLE audio help this, though? I'll look into it more later; I just never thought to try audio changes. LLE audio being forced would be much, much more preferable than full MMU.

No, LLE audio does not work.

Sorry, my bad, i didn't test it enough it crashed a bit afterwards.

It tends to crash whenever it feels like it; but I've yet to get through the entire tutorial without it crashing. Full MMU works fine, but yeah, performance is bad. Then again, playing the game at all is better than this.

Full MMU isn't working just fine for me any more, what the heck?

Bisect it? If there's some sort of regression, it might point towards the issue.

It appears to be unrelated to the MMU stuff; I tried it in 4.0 and managed to reproduce the crash from a slightly different spot. I guess I did something wrong when testing this...

It seems like the game is trying to lock-on to something that doesn't exist, causing the crash.

There is a lot of errors now that 4.0-3746 shows them as warnings.

Note that it is easy to reproduce the crash if you simply melee some tvs to your left when you start the game on the first level, running into them while doing so.

Weird thing is, once you get through the tutorial I'm unable to crash the game.

I agree about the locking to a non-existent target idea you had; it looks like that.

Near the end of the tutorial in the master(tested with 4.0 3798) it crashes when you drop from the ladder. I don't think that was the case with 4.0-3746.

Also is this a bug on actual hardware?.
This was made with default mmu Dolphin 4.0-3746:
http://s000.tinyupload.com/index.php?file_id=62333918261490255074

It can sometimes crash on the ladder, sometimes won't. It's random. Just keep trying and you can get through. Once the tutorial is over the game won't crash.

Are you quite sure?. I got past that as you can see in my attachment.
Is your game crashing if you try Full MMU too?

Yeah I guess it is random. I made a savestate before the ladder and no matter what it will crash when I hit the bottom.
I restarted on the same build and made a savestate before the ladder and it always works.
Strange behaviours!

I got the game to crash in one of the buildings when I was asked to go in during a robbery. I hit a pool table and it crashed. The same addresses as tutorial appear in the error message.

Many Case Name 0 level simply crash Dolphin when selected
Ok to test simply enable debug mode ->
Then select
Case Name 2 BC01
Mission Name 2 BC1_M1
Then walk through the kitchen Door in the restaurant.
I've tested Many revisions

Full MMU, BAT and WIPs don't change behaviour but selecting Full MMU does not show the error messages on invalid addresses anymore :(

The example above has been partly fixed last week in PR #1693
And by party fixed I mean It's the first time one could enter the kitchen in the example above. If other characters run through those doors they will disappear I think they teleport outside the map. Any melee will cause a crash after this happens.

However the game still crashes often.

With this information it is evident to me that the issue is Dolphin not causing DSI exceptions/other exceptions where it should.

If there is any information on how I'd progress on this "educated guess" to fixing this issue would be appreciated.

I'm guessing hwtests are the only way to find out more about the consoles behaviour on where else it generates such exceptions.

Underclocking the CPU seems to fix it. Source: https://dl.dolphin-emu.org/prs/pr-1798-dolphin-latest-x64.7z go to configure/advanced, and underclock the CPU to about 70 - 80%

smurf3tte has a branch that fixes one of these crashes: https://github.com/smurf3tte/dolphin/commits/truecrime_nyc