PLEASEEE wishing the developer stays on high res , don't bother to reduce the size of file if it takes more time , if he can do high resolutions renders , it should be better on the long run, (cause no re doing later as some developers are doing now a days) and is more nice to play them on high res too.
all this saying / taking into consideration the load and overload it (high resolution renders) can put on the developer, this no the same for all developers, and we can only hope and wish it no be to much T.T