If the program works for you at 320x???/TC on VGA and 640x???/TC on RGB/TV then you don't need the recent patch. You should be fine.
If you get problems with no sync in some modes (except for the 640x VGA case which is not supported by Videl HW & ram speed) then the patch may help - it simply adjusts the refresh rate slightly to be more compatible.
BTW don't overlook the two most important Apex key shortcuts - 'Z', '/'