I see is a common problem with DOSBox. But the solutions I tried didn't work.

Any ideas?

Frameskip=1 with Slow PC option in game seems to reduce such 'flowing water' effect but I never found it as screen tearing. Balls of Steel had real one...

I've been having similar tearing issues. Best luck I've had to far is to edit the .conf file and make the following changes:

[sdl]
fulldouble=true
fullresolution=original
output=surface

[render]
aspect=false
scaler=normal2x

This *seems* to have have cut down quite a bit on the occasional "chops" that I get on the screen. Hope it helps.

Ok, after few times I looked on my other pinball games conf files and here's the result that works for me best:
https://pastebin.pl/view/94e5979c

That fixed it for me. Great work!

Thanks for this, perfect settings - no more tearing!

You can change aspect ratio to false if you prefer menu and view stretched to fullscreen completely but I think it looks better like real table if it's on and on fullscreen desktop resolution, because in 'original' it display table in left corner.
https://pastebin.pl/view/94e5979c
http://www.mediafire.com/file/mxsjo84bj09neez/dosbox_epin.conf/file
[sdl]
fullscreen=true
fulldouble=true
fullresolution=desktop
windowresolution=original
output=ddraw
autolock=true
sensitivity=100
waitonerror=true
priority=higher,normal
mapperfile=mapper-0.74.map
usescancodes=true

[dosbox]
language=
machine=svga_s3
captures=capture
memsize=16

[render]
frameskip=0
aspect=true
scaler=normal2x

[cpu]
core=auto
cputype=auto
cycles=6000
cycleup=10
cycledown=20

[mixer]
nosound=false
rate=44100
blocksize=1024
prebuffer=80

[midi]
mpu401=intelligent
mididevice=default
midiconfig=

[sblaster]
sbtype=sb16
sbbase=220
irq=7
dma=1
hdma=5
sbmixer=true
oplmode=auto
oplemu=default
oplrate=44100

[gus]
gus=false
gusrate=44100
gusbase=240
gusirq=5
gusdma=3
ultradir=C:\ULTRASND

[speaker]
pcspeaker=true
pcrate=44100
tandy=auto
tandyrate=44100
disney=true

[joystick]
joysticktype=auto
timed=true
autofire=false
swap34=false
buttonwrap=false

[serial]
serial1=dummy
serial2=dummy
serial3=disabled
serial4=disabled

[dos]
xms=true
ems=true
umb=true
keyboardlayout=auto