The video lag on my spark makes it almost unusable... esp when recording!

Ive read a lot and most seem to be using OTG cables, or others have suggested turning off the video cache, but my latest version of the app
I cant turn off the app from recoding too? it seems to record to the sparks on board SD card and then my phone is also recoding, what's the point in that?
just seems to be adding more overheads and processing to my phone!

any help is great

Please use the devices in the recommended list. Did you ensure that there is no interference around your spark? The cache video will be saved in the playback automatically, you can delete it if you don't need it. Or you can open the selection of " Cleasr Cache Automatically".  

A guy on here had the same problem a few weeks back, lag of 6 seconds.
If I recall correctly, the solution was to format the SD card through the app.

I seem to be countering Administration; in a few threads this evening. I don't mean too; I am just stating what works for me.
I opted out on the refresh program, so when I total my drone its all on me..
Anyways I use a rather cheap tablet; an A6 Samsung, w/o lag.
I would dread trying to fly with two separate pulse signals. The one from the device to the remote; the other from the remote to the drone.