I have noticed the same thing. If I start playing a game in wine, say ETS2, on my laptop (Intel HD 4000+Nvidia 820M) it runs fine for maybe a minute and after that the FPS drops like a rock. The "problem", if you can call it that, is that the GPU temperature goes above 85C and thus powerclamp kicks in and tries to reduce the temperature.
I have noticed the same thing. If I start playing a game in wine, say ETS2, on my laptop (Intel HD 4000+Nvidia 820M) it runs fine for maybe a minute and after that the FPS drops like a rock. The "problem", if you can call it that, is that the GPU temperature goes above 85C and thus powerclamp kicks in and tries to reduce the temperature.