Question / Help Huge FPS drops

[seblis]

Hello guys. So I have bought a new laptop Dell with Intel Core i7-6700HQ and Intel HD Graphics 500 or smthng (no important) and Nvidia GeForce GTX 960M, RAM 8GB. I think important is, that I have 1HDD 1TB. Because there was only one partition (C:OS) so I made 2nd (D:). Okay, so when I play CS:GO, I have 100+ FPS (usually +-120). When I want to stream with OBS, it drops to 40 FPS, and the display is laggy (it isnt smooth) and it is visible in stream. Also my stream is keep loading when I use OBS. This happens even when I use downscaling to 720p. Fps in obs are set to 30. IMPORTANT: So because of this problem, I started use Nvidia shield (old name is Shadowplay). This keep my FPS TOTALLY SAME AS WITHOUT STREAMING = I have +-120 fps. My bitrate is 2MBps in nvidia, and in OBS too. FPS are setted for nvidia shield to 30FPS. I dont know what video quality is there (because there is Game mode or smthng liek that) but it looks very very good (so i thing 1080p or 720p). Can anyone tell me where is the problem with OBS? I have to use monitor capture because with game capture there is black screen (sometimes it works fine). I would appreciate if someone could help me with setting OBS as well (for good quality and NORMAL FPS!!). If you will need, I can send you more info, just ask :) THIS TROUBLE IS NOT HAPPENING ONLY FOR CSGO, BUT ALSO FOR OTHER GAMES!!