I have a laptop with Geforce 640M video and Intel i5-3317U processor(Acer Aspire M3-581TG).
Nvidia uses driver 331.113 and Intel integrated graphics uses i915. With Nvidia Prime, when I switch to Nvidia card, my performance is a lot worse than it is with Intel.
What might be the cause of this issue?
Are Intel drivers simply better optimized than Nvidia ones?
nvidia-bug-report.log.gz (187 KB)