UserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.84 Safari/537.36

Steps to reproduce the problem:
1. Run Reddit Enhancement Suite
2. Open www.reddit.com
3. Start opening up comment links from posts in new tabs
4. All tabs open within the reddit.com domain will now freeze until all reddit tabs have completely loaded

What is the expected behavior?
On all previous versions of Chrome that I know of, all tabs have pretty much been handled individually (I have a multicore cpu), so if one tab was slow to load, that would never impact any other tab.

What went wrong?
Not sure. The problem started happening after the last Chrome update, though I assume it's mainly due to how RES is made that this happens.

WebStore page: https://chrome.google.com/webstore/detail/reddit-enhancement-suite/kbmfpngjjgdllneeigpgjifpgocmfgmb

Did this work before? Yes Until a couple of days ago, and the issue is with Chrome and RES, and Chrome is the only one of the two that had any updates in the last days.

Chrome version: 51.0.2704.84  Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 21.0 r0

I'm actually a bit unsure about what exactly is causing this after some more bugtesting, because if I disable RES in incognito browsing, the issue is gone, but if I disable it in  a normal session, the performance issues persists (regardless if I disable other extentions or not).