We have no artificial caps on screen time. DS, now 7, has been on computers/iPad/TV for whatever amount he needs his whole life (his own computer since he was 2.) He may have days where he is deep diving a lot, but has learned self-management skills and is good at finding his own balance.
The level of information available, ability for self-directed discovery & learning is powerful. We are in the 21st century, computers are a large part of life for most people. I think research in general is rarely relevant for gifted kids if it isn't specifically targeted at them.
