This would imply it is not a SambaPOS problem but another issue with your tablet. If your tablet is slow in general, SambaPOS will also be slow…
I agree with changing power options. Especially on tablets and also any fanless systems (I say fanless because if you put High Performance power profile on systems with a fan, it usually makes the fan run constantly).
The easiest way is actually just changing to “High Performance” power profile. Most systems by default will be on “Balanced”. However most tablets will have “High Performance” hidden or disabled. You may find it under “show additional plans” but I have also seen it disabled on some tablets so you won’t even find it there.
If disabled, you need to enable it first, there is some options on how to that on this website:
It gives you easy access to many settings for locking down your system which is useful when used as a POS. Usually on systems I setup I will create 2 Windows accounts - one Admin and one a standard user. The standard user account is set to auto login to Windows and auto run SambaPOS. I run the lockdown tool once logged in with the standard user and it will let me configure those settings for that account.
To enable the High Performance plan with the lockdown tool, go to Continous Operation and its the first item on the list. Once you enabled it (and other useful settings), click the and it will save settings. Note when saving, on some systems if you have system restore disabled (common on most new Windows 10 systems), if you have it create a system restore point, it will most likely come up with an error.