spector800

I'm seeing this as well, although it's on the Vanilla client so not sure if related:

Also using Quester product (FNV's logic).

The CPU spike occurs when first logging into the product (License Keys Management Login), where it goes from ~4-5% CPU to 15-18%, even without running the actual quester code.
Logs don't show any errors being thrown at this time

Edit: Logs now showing this error:

[E] 13:41:31 - GetReqWithAuthHeader(string url, String userName, String userPassword): System.Net.WebException: The remote server returned an error: (400) Bad Request.
   at System.Net.HttpWebRequest.GetResponse()
   at robotManager.Helpful.Others.GetReqWithAuthHeader(String url, String userName, String userPassword, String othersValue)
[E] 13:41:40 - GetReqWithAuthHeader(string url, String userName, String userPassword): System.Net.WebException: The remote server returned an error: (400) Bad Request.
   at System.Net.HttpWebRequest.GetResponse()
   at robotManager.Helpful.Others.GetReqWithAuthHeader(String url, String userName, String userPassword, String othersValue)