Did you try the 1.3 patch? Fixed the freezing issue for me so I could remove ENB patch.
The official 1.3 patch increased my FPS average and improved cell loading, with less stutter. The graphics are more fluid, without sudden pauses I noticed before.
However, as I tested ENB 0096 after the 1.3 patch, I noticed ENB resolved the crash from stress testing my settings and made stutter completely gone in my computer.
http://enbdev.com/doc_proxy_en.htm <- only one proxy, AFAIK