My normal variance in one 2-hour session is
-2 / + 6 buy-ins. -2 is very rare, -1 sometimes, break evens quite
often. Ive just 2 months stats but I have win/loss ratio in
sessions 75/25.

If u r down 3 buy-ins in 10k hands, you have to make
changes in your play. I dont think its only variance.

I mean 10 k hands i quite big sample size.