Advice for screen recording on Windows 7?

[nobodyhome]

So I'm trying to record my screen as lag free as possible. I've tried OBS and VLC, but when I start recording while playing the video I want to record the video starts chunking. As I'm not very video nor Windows savvy I've only changed the fps and tried different software. Is there anything else I can try with settings or software?

[Dazzle Cat]

use keepvid pro .. it can download m3u8 chunks for you and merge them automaticly . you get original not reccorded

[nobodyhome]

use keepvid pro .. it can download m3u8 chunks for you and merge them automaticly . you get original not reccorded

Thanks for the advice, but I tried it and read up on it and sadly it's not exactly going to work for what I'm trying to do. Besides, I already know how to download m3u8 without something like KeepVid Pro and that's not what I'm trying to do. Just a simple screen record of my activity without a lagging screen. Plus, it'd be better if it were free (I should've clarified that in my first post and so I'm sorry.). Thanks again for the suggestion. I'll keep it in mind in case something comes along that it would be great for. Tho I'm still looking for a solution.

[pcspeak]

I've never tried it.
http://srecorder.com/