So I have been having intermittent lag issues for a while with my V20. Not constant and bad, but just enough to annoy me. I noticed the lag most frequently when viewing images in the stock gallery app and listening to music. The common denominator was the SD card, a Sandisk Ultra 64GB that I have had for several years....I think I got it when I had my G4.
I decided to try an experiment. I removed the SanDisk and backed up all the files on it and then copied them to a Samsung EVO 64GB card that I had in a tablet that I wasn't using. I formatted the replacement card and copied the files to it and put it in my V20. The difference is quite noticeable, NO LAG now. I'm going to continue to monitor how things work and since it's mostly full, I need to get another card. I'm looking at the Samsung EVO 128GB.
David
I decided to try an experiment. I removed the SanDisk and backed up all the files on it and then copied them to a Samsung EVO 64GB card that I had in a tablet that I wasn't using. I formatted the replacement card and copied the files to it and put it in my V20. The difference is quite noticeable, NO LAG now. I'm going to continue to monitor how things work and since it's mostly full, I need to get another card. I'm looking at the Samsung EVO 128GB.
David