This is a game I know and love. I really do love this one. But looks like GOG doesn't know how to configure it, so here it goes. 1. Locate in your folder C:GOG GamesTyrian 2000 a file called "dosboxT2K.conf" and open it with Notepad. 2. Ensure yourself you have the following values (everything between parentheses is an explanation, so don't copy or delete that) [sdl] fullresolution=1366x768 (or your real resolution) output=overlay [dosbox] memsize=32 (this is a DPMS title, so it won't run well with 8 MB of RAM assigned) [render] scaler=none (the fullresolution setting ensures that the GPU, and not the CPU, does the scaling) 3. Enjoy your 2x framerate :)