GTA CW + Fire = game freezes

Im using this rom https://www.romulation.org/NDS/3538_-_Grand_Theft_Auto_Chinatown_Wars_%28E%29%28Xenophobia%29.rar.html/ on my Cyclo DS (newest firmware) and every time I want to produce some flames with my character the game freeze. I managed the flametrower mission with grenades instead but now im hanging at the bank robbery when I walk in this dragon costume over the street and should make fire-effects.

Read the Common Issues https://www.romulation.org/forum/index.php?topic=1462.0

didnt help. I tried it on a sandisc(2gb) and on a kingston(4gb) card without success. Its a problem with the game in connection to the cyclo ds. nobody has a fix for this?