You will probably hate this answer as much as I did when I learned about it but:
Unfortunately there's no way to not add further processing. While using B0 mode with DVI/HDMI out does produce a little lag (21 ms...a whole frame takes ~34 ms so its 2/3 a frame of lag) its mostly unnoticeable. The problem with this mode is it does not allow for scanlines or other features. The only way to add unnoticeable lag and to be able to use B1 mode and scanlines is to get a Gefen VGA to HDMI converter that will run you an additional $250. This is the cheapest way to do it
(there are other converters that are WAYYYY more expensive that do the same thing...extron and DVDO come to mind for about $400-$500) but the gefen has a really high conversion speed (28ms...so only 7ms more) All other cheaper converters will add 3 to 4 times the amount of lag that the gefen does (a full 1-2 frames...that is noticeable). This is the setup I have for my game room and it works flawlessly. In fact, I cant eveon tell a difference. Just be sure to turn off any and all post processing that your HDTV might do (scaling, line doubling, picture modes, etc) as that can add additional lag as well up to a frame. As a matter of fact, when I turned all the extra processing off on my tv I realized it was the tv adding lag and not the XRGB3 or the gefen. The only issue that arises with the gefen is usually with fighting games as it cannot handle resolution switches mid game (screen will go blank for a few seconds and then reappear, obviously in a fighting game that is unacceptable) but I then simply switch it to B0 mode.
So if your fine with no scanlines, I would recommend keeping your setup as is and just make sure your tv post processing stuff is off. Otherwise...$$$$$$
BTW my TV
does have VGA input but the signal from the XRGB3 is incompatible...imagine how pissed I was!!!
Originally Posted by tangaroa
You will probably hate this answer as much as I did when I learned about it but:
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