Navigation could use a dash more definition in the page body (looking at CSGO page) but understand you're going for a more minimal overall look. Maybe try darkening the table borders a few shades as a quick fix? Down the track it could do with more clearly defined sections.
I'm at 2560x1440 on the desktop and I find the site much less in your face at 80% zoom. Fits more content on-screen too, especially in the forums. Not sure how other resolutions are faring but also worth considering.