DoltLab becomes slow

[coffeegoddd]

Customer reports that the DoltLab v0.8.2 UI and API becomes slow over time.

Per customer:

Everything gets so slow. UI and API's also. When you are trying to open a table it hangs for several minutes etc.
I have found out that there is too many merged branches. I wrote a script to remove merged ones, closed ones etc.

Everything in VM seems fine, CPU, RAM, network etc... There was just an error about conccurent updates for sessions table. Beside that I could not find any error.

I don't know what else can be done to maintain the speed of doltlab. But I noticed there is too many graphql requests from UI. So I stumpled up on errors in there.
There is too many calls to external services like stripe etc. which are not used in doltlab, would it be possible to disable those.

Customer states that purging merged branches improves performance.