Yes, i was hable to download the forge-1.8-11.14.3.1547-installer-win.exe (manually altered the link from the previous version).
From a smooth experience at 1521 to the latest (forge rendering pipeline turned on), it feels like a night to day experience.
I get down from a smooth +115 to spikes from so low as 15-20 to +80 fps.
If you add optfine being compatible with 1521... its like going from a bright sunny day to a stormy and heavy night rain.
However, with forge rendering pipeline turned off, things go smoother, but the experience is not so good, or close to 1521.
I'm running it on a quad core q6600 2.4, gt240 1gb ddr5, 4gb ram on a windows 10 machine with java 8 update 65 (64bit) and nvidia drivers 341.81