Also to mention the PC worked fine 1 year and just started doing this lags rare once per 1-2 days i just was curious whats going on is not anoying but it happening and its interesting to discover it before it be worst, so i tested what i can i already explained my tests, whole hardwere got stress tested even CPU on Prime95 that normally stressing the cpu pretty hard and nothing from hardwere stresses did issue.I strongly recommend you go back to 10 while you can - do so and keep all your data.
I have had a brief look at the logs and there is clearly a problem - but I cannot at this time identify it
I will spend more time late tonight. I have only come in from a job, for a brief break and coffee.
You did not make it clear to me that you had in fact gone to 11.
I know you mentioned that it had been suggested, but you were badly advised, you should never change the OS on a system that is not working well, especially on one that is exhibiting the errors yours is.