Yes, doing this -

set autolock=false in the conf file. (advice from Vogons user "LoneLines")

worked for me also.

I tried leaving using the mouse until in-game, but that didn't work for me. Only the above config file alteration cured the "mouse zooming over to the right hand side" Stonekeep problem.

Update - I ran Stonekeep on an old Pentium II based machine, inside Windows 98 "dos box mode", and I got this specific mouse problem! (The mouse cursor zooms over to the right hand side of the screen if you try and pick something up)

So, it's not a DosBox (emulator) problem, it's more to do with Stonekeep not being able to properly run inside a Windows environment.

I reran Stonekeep on the same P2 machine, but in "pure dos" mode, and I didn't get this mouse problem.

However, to run Stonekeep on DosBox (emulator), I did find that doing this -

set autolock=false in the conf file. (advice from Vogons user "LoneLines")

worked very well.

Im having this exact same problem running dos 6.22 on a am5x86 133 ADZ

I've tried everything.

When trying to play Stonekeep the mouse cursor keeps leaping over to the right side. its a real pain in the a$#

The issue is related to CPU speed and not dos box?

does anyone know how I might fix it so I can play Stonekeep on my rig.

Would it help to disable the gameport?

what mouse driver do you use?