Memory that looks occupied can still be available
Windows uses spare physical memory to cache data that may be useful again. Standby memory is part of available memory and can be reclaimed when applications need it. A high looking memory figure in a monitor is not automatically evidence of a leak or a performance problem.
Look for actual pressure
Check whether applications are closing unexpectedly, whether committed memory is approaching its limit, and whether hard faults or paging coincide with the stutter. Compare the same game workload after a clean restart. A game that needs more memory, a browser with many tabs, or a driver issue requires a different diagnosis from a harmless file cache.
What working-set trimming changes
Tools that trim a process working set can remove pages from that process's resident memory. If the application needs those pages again, Windows may have to read them back, causing page faults and extra work. The lower number immediately after cleaning does not prove that the game runs faster or that the memory pressure is solved.
Try safer steps first
Close an application you know you do not need, check for runaway processes, and restart if a program has been running abnormally for a long time. Update an affected application through its official channel. Do not repeatedly force clear caches during gameplay; it can create new stutters and hide the symptom.
When to investigate further
If memory use keeps growing under the same workload or paging happens alongside measurable hitches, record which process grows and when. Check the app's own logs and updates. Add RAM only after confirming capacity is a real constraint for your applications.
Sources and further reading
Guidance is general. Check the documentation for your exact hardware, Windows version and game before changing system settings.
