Hi,
I have been observing slowness in leetcode, following things I feel are slow:

1. Previously submitted solutions are taking longer to execute. A solution which took 15 ms few days ago, is now taking 43 ms. 0 ms solutions are now taking 1/2/3 ms
2. Page loads are also slower.
3. Program execution time, from clicking submit button to get the response back from server is also taking more time now.

I have checked with different providers, its same for me.