No one else posted it yet:
Here's the Action Replay Code to bypass the Battle-Animations which caused the crashes and freezes for the NO$GBA Emulator(also works with NO$ZOOMER):
5218E94C E51F1948
1218F94C 00000491
D0000000 00000000
5218FCAC FAFA744F
02190D50 E1A00000
12191C88 00000033
02191DC8 E3A00002
D0000000 00000000
Tested it within the first duel, and this is the first code for no$gba which worked for me.
Enjoy
Edit:
There are also 2 other codes, but not neccesary if you just want to remove the crash thingy (never activate more than 2 codes at a time or the game will crash again):
Remove the animations when cards are activated
521516C8 FAFB1714
12152774 000000BD
12152788 000000B8
12152798 000000B4
121527F0 0000009E
121527F4 0000009D
D0000000 00000000
Get rid of animations that shows phase name
52151F10 0227E938
E2152F10 00000020
E5801574 E3510000
1A000009 E5941000
E5952000 E59F035C
EB00A75E EA000004
D0000000 00000000