i have RB951-2N router ,and the user manager become slower day after day,and user manager use 67%
and the menu logs can't be open

how can faster this router or remove logs from menu

you can use user-manager on RB951-2N
but is not really projected to do that.
It has few memory

I have similar problem.
My Router OS is on x86(CPU), so there is more than enough space on it.
Initially, it takes close to an hour before the Usermanager becomes accessible whenever the router is booted.
Any reboot, it will still take the same time before the Usermanager will start working.
This time to wait gradually gets longer day by day, month after month.
Now after many years, each time router boots, I have to wait between 2-3 hours.
This means for any reboot, I need to wait for another 2 - 3 hour for Usermanager to become operational.

What is the best way to solve this delay?
NOTE: I don't need the data in the Usermanager, I can let it go.. will resetting the Usermanager works for my case?