Recently we've been seeing that searches on our local TestRail installation have been very slow, in the realm of minutes to execute. I don't feel that this is due to load, since an individual search is slow even at night. However we do have large suites, and we have even larger sets of run results, surpassing half a million results now.
Beyond searches, navigation, reports and every other screen works fine.
We have a Windows installation with MySQL. Are there any specific settings or changes you might recommend for this very specific issue?