WaitableTimer slept too long/short

[Vrally]

I get a lot of warnings in my simple OpenSceneGraph (OpenGL) application running with the latest SDK 1.20.0:

...
06/12 17:25:32.939 {!ERROR!} [Kernel:Default] WaitableTimer slept too long/short (i.e. 1.738477 ms)
06/12 17:25:41.174 {!ERROR!} [Kernel:Default] WaitableTimer slept too long/short (i.e. 2.374699 ms)
...

I have tried to replicate the behavior of the OculusRoomTiny(GL) demo, but I am obviously missing something, since the demo runs without these warnings.
What is the source of these warnings?

[Vrally]

Regretfully my Oculus device broke short after writing this question and I am currently in talks with the support people regarding an RMA.

But I was mostly interested in what part of the Oculus SDK these warnings had their origin from.
What is it this warning is trying to tell me?

[Vrally]

@imperativity

I have attached the logs as requested.

This was the latest output in visual studio 2017 when I ran my test:

11/01 10:50:58.744 {INFO}    [Kernel:Default] [CAPI] LibOVR module is located at C:\Program Files\Oculus\Support\oculus-runtime\LibOVRRT64_1.dll
11/01 10:50:58.764 {DEBUG}   [Client] Connected to the server running version (prod = 1).1.20.0(build = 501061) feature version = 0. Client runs version (prod = 1).1.20.0(build = 501061) feature version = 0
11/01 10:50:58.785 {DEBUG}   [Kernel:Default] [HMDState] Using default profile default
11/01 10:50:58.785 {INFO}    [Kernel:Default] IAD changed to 64.5mm
11/01 10:50:58.785 {DEBUG}   [SharedMemory] Creating factory
11/01 10:50:59.317 {INFO}    [Kernel:Default] [HMDState] Detected the active window handle changed to 20eb6ll
11/01 10:51:19.940 {!ERROR!} [Kernel:Default] WaitableTimer slept too long/short (i.e. 1.863781 ms)
11/01 10:51:36.874 {!ERROR!} [Kernel:Default] WaitableTimer slept too long/short (i.e. 2.158223 ms)
11/01 10:51:43.229 {!ERROR!} [Kernel:Default] WaitableTimer slept too long/short (i.e. 1.583889 ms)
11/01 10:51:51.242 {!ERROR!} [Kernel:Default] WaitableTimer slept too long/short (i.e. 3.356760 ms)