I am just a one-man show, but I have been using Creo Parametric 1.0 for a few weeks now on an HP Windows 7 machine and its performed wonderful!
The only problem I have had is when my computer goes to sleep after not using it for a couple hours I lose the license and need to restart my machine to regain the license, but that's probably just on my end.
As far a performance, speed, graphics, etc. goes, I havent had any issues at all, but I don't do much large assembly work... mostly sheetmetal, and drawings for a local client. Otherwise, its just getting used to some new buttons, etc.
I have been running Creo 1.0 Parametric since I got back from Las Vegas.
I am testing it with a couple of other users to cover different type of projects. So far, we like the new UI and it's much easier to use overall. I have no issues with performance on Windows 7 Professional, 64bit. We are running Dell Precisions T3500's with Quad Core Xeon processors, 6GB of RAM and Nvidia Quadro 3800 graphics cards.
Although Creo 1.0 is not a finished product yet, I find it to be far better than anything PTC has made before it. The only thing that scares me is the presense of the "Menu Manager". PTC needs to kill this quickly or the perception will be that Creo is no different than Wildfire from a full UI Conversion stand point.
I personally feel that PTC should focus on getting rid of the "Menu Manager" in the entire UI and updating the 8-bit icons found in certain areas of the UI.
I think it's a step in the right direction for PTC, but they really need to focus on what made Wildfire such a mess. The big push on Creo is the Unified UI across the entire design suite, which falls short of the promise due to the "Menu Manager", which is old pre Pro/E 2001 code.
"Too many people walk around like Clark Kent, because they don't realize they can Fly like Superman"