We have ASP.NET application (with both MVC 5 and WebAPI controllers) running on Windows Server 2016 (IIS 10). Some time ago we faced performance degradation and during the analysis found out that Perfcounter for ASP.NET Apps v4.0.30319/Requests Executing never goes down. It just raises during the day and app pool recycle is the only way to make it zero. It can raise up to several thousands which seems to me totally incorrect and abnormal. I assume this is definitely related to our performance issues. However, I haven't managed to find any explanations to it.
Any thoughts on this matter are highly appreciated.