Hi guys
While I'm playing The Secret Of Monkey Island I notice an image defect..a sort of phase shifting
the problem does not occur if I use ScummVm as Emulator

My Dosbox setting

fullscreen=true
fulldouble=false
fullresolution=desktop
windowresolution=original
output=opengl
autolock=true
sensitivity=100
waitonerror=true
priority=higher,normal
mapperfile=mapper-0.74-3.map
usescancodes=true

frameskip=0
aspect=true
scaler=none

core=auto
cputype=auto
cycles=auto
cycleup=10
cycledown=20

MIXER

nosound=false
rate=49716
blocksize=1024
prebuffer=25

sbtype=sb16
sbbase=220
irq=7
dma=1
hdma=5
sbmixer=true
oplmode=auto
oplemu=default
oplrate=49716