Hehe, I also installed everything before my headset shipped. It worked very well for me... when it arrived I literally just plugged it in and it worked!
I also recommend you install Pix.exe they posted,
It unlocked more resolutions in extended mode.
See the Pimax mode currently makes it like the vive for steamvr compatibility... but this reduces the resolution... still hd but in extended more (with pix installed) you get the other resolutions... currently 2560x1440 (slightly above 2K) works great... they are still working on a raw 3K,4K signal... they need to figure compression otherwise the 4K bandwidth get limited to 30fps instead of 60.
In 1440p, extended mode, some of the unity games I've seen are stunning. I've never seen VR like that!.. and when they get the 3K, and 4K working as a raw output WOW!
Here is that pix link too,
That link was from this post:
Good luck, and try to stay patient