Battle Isle 1 does not run correctly with the GOG default DOSBox settings. It works up unti there is a battle, then the whole thing runs stupid fast and you can't tell who won. That's not how it's supposed to work.

As a workaround I edited C:\Games\Battle Isle Platinum\Battle Isle\dosboxBI1.conf and put cycles=fixed 2000 under CPU. This seems to be a lot better.

I'd suggest to the GOG team that they do this by default as people might not realise the battles aren't supposed to run at warp speed!