Some way to enable weakhash on android

Right now there is no way to force-enable weakhash on android, android part always use API to disable it completely at syncthing start, even if I set it to always trough WebUI. Can you please add setting to disable this algorithm? I have some drive images and backups on my android device and I think I can achieve major sync speed boost if I could use weakhash on android. Maybe it will not be that slow on my device.