The most common reason the DVD's falter on PC is usually lack of RAM memory or scratch disk
The firmware up on dedicated players is different to a PC.
In running DVD slide shows for various folk in various locations I have found that the higher the 'quality' the player the fussier they get. and a £20 special from Comet or ASDA is much more amenable to the high variety of disks- not only commercial ones of the pressed variety but also'Burned Disks from computers.
Indeed on one occasion when I was presenting from a sophisticated public system, and wanted to test the disk in the system - the technician in charge said - Oh! the posh one won't play that-
This is why we have this one connecting up an own brand from Walmart.