This is my first go with TFT shield displays, a step away from the 2 x 16 LCD's I'm used to. I bought two of these displays on EBAY (https://www.ebay.co.uk/itm/3-5inch-TFT-Color-Screen-Module-320X480-Ultra-HD-LCD-Shield-for-Arduino-UNO-FT/112790945520?hash=item1a42dd3ef0:m:miQ_f6oi8m3Qb6KK72-o1Mg)
It is advertised for use with UNO's, and it works great on them, but I slapped the TFT shield onto a MEGA and it works without having to alter the code. Only problem is that is performs at about 60% of the speed on a MEGA compared to on an UNO.
I would have thought this would be the other way around. Does anyone know the reason for this? Is there something I can adjust in the wiring or code to get this display as snappy as on the UNO?