A few days ago my framerate startet to drop so far, most of my games are unplayable even on low. I have no idea what could have caused it, since it happened WHILE playing, so there was no update of any drivers or the OS. A few numbers:
Rainbow Six Siege: from 60 fps to ~25
Civilisation V: from 80 fps to ~30
Civilisation Beyond Earth: from 50 fps to 25-30
Payday 2: from 80 fps to max 17
I already tried to reinstall the driver (the latest version of Crimson), tried to install the Catalyst driver, updated my BIOS and so on but nothing worked. I have no idea what could be wrong, all the games ran just fine and the laptop didn't get to hot. Of course all of them are set to use the AMD card, not the integratet one. Although no game I tried got over 30 fps, my score when running a FurMark benchmark is still the same it was bevore the problem occured (~600).
Lenovo Thinkpad E550 (1,5 years old)
Intel core i7-5500U @ 2.4 GHz with Intel HD Graphics 5500
8GB DDR3 RAM
Samsung SSD 850 EVO 250GB and a WDC WD10 SCSI 1TB HDD
Edit: I started using a second monitor around christmas but it worked fine for over 2 weeks.
I am happy to provide more information if needed and hope one of you can help me.