In the FXM version, when using an independent cache, the page content loads extremely slowly. This has been tested multiple times

[chenzhifeng0025]

In the FMX version, when using an independent cache, the page content loads extremely slowly. This has been tested multiple times

I used the FMXTabbedBrowser demo project and modified the code in the procedure TBrowserFrame.CreateBrowser to give each page an independent cache directory. The code is as follows:

procedure TBrowserFrame.CreateBrowser;
var
  RequestContext: ICefRequestContext;
  {$IFDEF MSWINDOWS}
  TempHandle: HWND;
  TempRect: System.Types.TRect;
  TempClientRect: TRectF;
  {$ENDIF}

begin
  CreateFMXWindowParent;

  if not (FMXChromium1.Initialized) then
  begin

    TempHandle := FmxHandleToHWND(FMXWindowParent.Handle);
    TempClientRect := FMXWindowParent.ClientRect;
    TempRect.Left := round(TempClientRect.Left);
    TempRect.Top := round(TempClientRect.Top);
    TempRect.Right := round(TempClientRect.Right);
    TempRect.Bottom := round(TempClientRect.Bottom);

    FMXChromium1.DefaultUrl := FHomepage;
    //These few lines are the modified code.
    var TempCache := 'D:\cache2';
    var TempContext := TCefRequestContextRef.New(TempCache, '', '', False, False, False, FMXChromium1.ReqContextHandler);
    FMXChromium1.CreateBrowser(TempHandle, TempRect, '', TempContext);
  end;
end;

With this code, opening a page makes the web page almost unusable, as it becomes extremely laggy. I've tested it multiple times, and the results are always the same. However, if I set var TempCache := '';, it works normally. This issue doesn't occur in the VCL version.

[salvadordf]

I just uploaded a new version of the FMXTabbedBrowser demo with an option to create independent browsers.
Notice that GlobalCEFApp.RootCache is a parent directory of all the cache directories.
The Windows user running the application requires write privileges in GlobalCEFApp.RootCache.

The browser has to download all the page contents whenever a new independent browser is created because the cache is empty.

If you want to create several browsers sharing the same private cache directory then you must use TChromiumCore.ShareRequestContext to get a new ICefRequestContext and pass NewWebBrowser.ReqContextHandler as the second parameter.

There are several factors that affect the browser speed like an empty cache, proxy servers, firewalls, antivirus software, etc.

FMXTabbedBrowser uses a browser in "windowed mode" and it should work as fast as TabbedBrowser2 in VCL.