I am having problems running Tropico 2: Pirate Cove, screenshots and descriptions below. Tropico 1 could also be affected, since they share the same engine, but I cannot verify it ATM. Will post my findings about Tropico 1 tomorrow.

Using the latest GOG version and dgVoodoo 2.63.2. Dg config is default, lest for the watermark disabled and stretching mode set to 'stretched_4_3'. The graphics card is a Vega 56, but I can also confirm the same corruption happens on a Ryzen 2400G APU (Vega 11).

This a screenshot of the main menu. A video should be playing as the background, but it is extremely corrupted. Menu text apparently renders fine.

Sadly that is not all. This is a screenshot of the main game screen. The map of the island appears to render fine. However, certain menu elements are also corrupted and unusable.

In a few hours or tomorrow I will be able to test Tropico 1 and share my findings here. I suspect the results to be similar. If anyone has any ideas how to fix this, they are very welcome (I haven't fiddled with the conf yet, as the options are pretty meaningless to me). Should anyone be willing to test Tropico 2 with a different brand GPU (nVidia or Intel), I would be most happy, as I suspect this could be an AMD problem.

Edit: changed post title to include Tropico 1.