Facing this issue for a long time now. The only solution for me is to stick to an older version of precision X (5.2.4) Versions up to 5.2.8 are okay'ish, but still short input lag on startup. From version 5.2.9 and up the problem becomes very annoying, with input lag for like 30 seconds on startup.  
 
I had this problem on windows 8.1 and as of today on windows 10. Clean install, minimum of 3rd party software etc. Would be nice if you can look into it, if you need more information, let me know. 

Same issue on Windows 8.1 and Now on Windows 10 (not as bad on 10).
 
Need a fix for this!

Been having this issue for awhile now. I thought it was just me and started reading online and noticed I wasn't the only one. Kills my boot time when I have to wait for evga precision to load. I try typing as soon as I am booting and m,y typing is delayed etc..

It would be nice if we could get an official answer on this.
Pretty sad to have a $2500 computer that boots in seconds but is unusable for the first minute due to Precision X.
 
Thank you.

I hope this gets fixed soon as this is an absolute PITA on both windows 8.1 and 10. Didn't try it on Win7.

 
Same problem here as well. On Windows 8.1 with tons of RAM, a highly OC'd CPU, 980 Ti, Samsung Pro series SSD etc., etc.

With PrecisionX on at startup: 30 seconds of input lag/lagginess in general at startup.
Disable PrecisionX on startup: No lag whatsoever.

Tried this on Win 8.1 and Windows 10 - getting 30-60 seconds of input lag until the Precision X appears in the system tray.

have you tried the new version?

Ayup - tried on fresh installs of Win 8.1 and Win 10; Precision X is v5.3.7  (assume that's what you mean)
 
 

mendhak
Ayup - tried on fresh installs of Win 8.1 and Win 10; Precision X is v5.3.7  (assume that's what you mean)
 
 

yes, was not sure if you had, they said a few issues were fixed. I guess that was not one of them