@Sinneric Your graphics card isn't in Sims 4's database, but you can add it yourself manually if you'd like. The file you'll need to edit is called graphicscards.sgr, and it's located within the game's program files. Unless you changed the default install location, the full path will be:
Program files (x86)\Origin Games\The Sims 4\Game\Bin
Open graphicscards.sgr (Notepad works fine), hit crtl-F, and search for MX150, which will take you to these lines:
card 0x179C "NVIDIA GeForce GTX 940MX" $cardLevelMedium $resolutionHigh
card 0x1D10 "NVIDIA GeForce GTX MX150" $cardLevelMedium $resolutionHigh
card 0x1D12 "NVIDIA GeForce GTX MX150" $cardLevelMedium $resolutionHigh
Create a new line under the first one and add this:
card 0x1D13 "NVIDIA GeForce GTX MX250" $cardLevelMedium $resolutionHigh
(with a few spaces in front of the line so it lines up with the others). Save the change and quit. Launch the game once, then go into Documents\Electronic Arts\The Sims 4, open the file called config.log, and look for your graphics card's name about 30 lines down. If it says [Found: 1, Supported: 1] next to the name, the edit worked.