Sound Issue after upgrading AdvanceMame

I am migrating my arcade cabinet from AdvanceMame v0.78.1 to v1.4.

Everything is working except the sound on Pac-Man and Galaga. They used 
to work fine on v0.78.1.

When I run them with v1.4, the sound is out of sync and distorted. It 
makes a stuttering, ticking sound. If I change the mode from the video 
menu and reset the game, the sound will work. So I am not sure, but I 
suspect it may involve a timing issue with the 224x288 modeline. I am 
using the same modelines I used under v0.78.1. I use display_adjust 
xclock if that makes a difference.

Anyone run into this before and know what I could do so I can run the 
games at their native resolution with sound working?


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