I forgot to record the fps counter, it went from 20 to 50 in the whole game and OBS always takes away some performance.
Everything is at minimum and the resolution is 800x600, you can access smaller resolutions if you modify your GameUserSettings.ini file.
I use MINT with several performance mods because playing with mod.io integration is horrible.
If you have problems with constant flashes or lights caused by not having a graphics card, use this mod mod.io/g/drg/m/boost-fps-fix-...
Summary: in the lobby I go at 14 fps and in mission it depends on the size of the cave and the number of bugs, usually 25-50 without recording.
MY SYSTEM:
OS: Windows 10 64bits
CPU: Intel(R) Core(TM) i7-3770 CPU
Graphics: Intel HD Graphics 4000 (64MB vram)
Ram: 8GB DDR3 1333mhz (4GB dual channel)
1TB generic HDD