The tech paradigm value under @COSMIC in rules.txt controls the rate at which advances are acquired; the higher the value, the slower the rate. From memory, the default value, 10, is the maximum. However, there's another tech paradigm value that you can embed in the SAV file that has a much higher maximum, but you need to first save your game as a scenario to use it. Start your game and enable cheat mode in the Cheat menu. Under the Cheat menu, select Scenario Parameters. Increase the Tech Paradigm value there. Again, under the Cheat Menu, select Save As Scenario. The scenario parameters will be appended to the resulting SCN file. You can then either choose Begin Scenario or change the extension of the SCN file to SAV and load the game normally. Either way, the game will no longer be flagged with Cheat Mode.