Programming in Access 365 but it is a 32-bit access front end with a SQL Express backend. Been using this database for years with no issues. All of a sudden starting approx. last Monday 12/12/2022 we started getting out of memory errors on the client side. Users started getting it randomly over 2 or 3 days as if it was an update.

If I open the database and watch task manager, as I open forms and close them, I see the memory usage go up when the form is opened as expected but it never goes back down to where it started from when the form is closed. We have a few form timers that run code every 2 to 5 minutes and the same thing happens, memory usage goes up when the timer triggers but when the code finishes the memory is not released.
I have run CHECKDB on the SQL Express tables, I have also run a SQL Shrink Database. On the front end, I have decompiled the database, run a compact and repair and then recompiled it.
I have been able to reproduce the issue on a computer at my house with a different access database. This database is a 64-bit database with access tables not SQL. The same thing happens, when I open forms then close them the memory usage does not return to the amount before the form was open, always just a little higher until I get the error message.