It's impossible to say what's going on because you have included no details about the project, the render settings, what might have changed on your system or anything else. Rendering time depends on wheat's going on in the comp and your available resources. If you optimize your preferences for your system and you don't have anything the might conflict with or steal resources from the render then you're probably doing as good as can be expected with those settings.
Have you accidentally turned on the ray-traced renderer in your composition settings?
Can we please see a screenshot of your memory and multiprocessing settings?
Could you please tell us more info about your system OS, hardware, etc.?
What version number of CC 2014 are you running?
What are the contents of this composition?
1 - Ray-Traced 3D just slows down even more and i use Classic 3D
3 - Intel i5 4570 Quad Core 3.2Ghz, 8GB Ram, Geforce GTX 760 2GB Palit Jetstream, 64-bit Windows 7, Motherboard: ASRock H87 Pro4, 120GB SSD, 1TB HDD, PC is running on Full Performance, 650Watt Power supply
4 - Adobe After Effects CC 2014.2
5 - My composition has - Soundkeys, Trapcode particular, audio spectrums (4), Fastblur.....etc
But my point is i don't understand why is Adobe After Effect so slow after the reinstall, its like rendering frame by frame but i am using same settings.
Can i get help here, please
Are you talking about during final render it's slower or during RAM preview?
Is it the same, exact project files as before?
yes same project files i haven't changed anything, and yes during final render.