No issues. Very simple to use.
For MiSTer Laggy
I bought a device a couple years ago that works on the same principle as this device, but it could only do 1080 and cost around $100+ at the time. This device can do whatever the Mister can do for resolution and its only 12.00 dollars. Shipping was quick and it worked exactly as it should. There is a mister core just for this device, you load it up and hold the device to the blinky white lights and it tells you exactly how much delay from when the core sent the white light to when the device registers seeing it.