Your issue may solely be that you are using a very old HMU (Oculus Rift DK2)
Let us take a look at this internally and we will get back to you with an answer.
Don't think that age got anything to do with it since I'm using Rift S
This problem have been going on for some time.
There is another thread about it so there is many others having this issue
i7-7700 CPU
GTX 1080 ti
16 GB RAM
WIN10
Oculus Rift S