On performance optimization

[thienvc]

After logging in, the following code slowed down the web performance

Dnn.Platform/DNN Platform/Website/admin/Menus/ModuleActions/ModuleActions.ascx.cs

Line 116 in 2e7a5eb

ModuleController.Instance.UpdateModuleSetting(this.ModuleContext.ModuleId, "QS_FirstLoad", "False");

We should save the "QS_FirstLoad" setting somewhere other than in "ModuleSettings"
Because this action leads to calling ClearCache(tabid), making the cache useless

[mitchelsellers]

Looking at the code, I think that this is something that SHOULD be fixed, as this for sure is a performance "oops" In my opinion.

I'm going to submit a PR suggestion

[mitchelsellers]

@thienvc This is a great find, I did confirm the performance issue and submitted a fix here - #6243