I'm working on a brand new PC (Windows 10, i7-6700 3.4GHz, 32GB RAM) and I'm running into difficulties with using CC2017.
Starting up AE, Photoshop and Illustrator takes a long time (about 2m45s) whereas Premiere starts up almost immediately (I'm working on an SSD so I guess it should be this way).
Inside AE the Warp Stabilizer and 3D Camera Tracker tools also get stuck on "Initilizing" for 2:40s but Warp Stabilizer in Premiere on the other hand works perfectly.
Any ideas? This all seems to be connected somehow. And the timings are to similiar for it to be a coincidence.
We can't know. Your info is to unspecifc. Start by checking your system logs and verify that nothing is blocked by your firewall and virus scanner and you don't have any driver issues that may cause delays when AE is initializing. Since it occurs on multiple programs, quite likely it's a global issue with your graphics driver, storage devices, network stuff or whatever.
Are you still experiencing this lagging behavior on launch? Please let us know how you are doing so we can discover how you fixed it or if you still need assistance.