OK some new info: I've tested the Game Framework on 6 varying office PCs with mostly crap video cards, and some with CRTs and some with TFTs. Here are my conclusions:
1) On two 19" TFTs the demo was perfectly smooth in full-screen mode. One had a slight vertical tearing every so often.
2) On all PCs, windowed mode had vertical tearing. This is a Blitz Max issue which has been posted in the bugs forum. However, it should be noted that the demo ran smoothly with no jerks.
3) I tested on a PC with a 15" and a Geforce Ti4200. This card is the previous generation to the 6800 I believe. Anyway, it exhibited symptoms that sound very like Shamblers i.e. smooth but with big jerks about every 0.8 seconds or so. In windowed mode it was perfectly smooth but with some vertical tearing.
So it looks like Shambler's issue is a Geforce issue and this is not the same issue as older TFTs showing jerkiness (like my laptop). Dumbly I didn't test the demo where the Lag Fix can be turned off on the Geforce Ti4200, but will do ASAP to see if it helps.
So as for jerkiness on old TFTs, there is really nothing than can be done about this esp. as it works fine on newer TFTs. If some TFTs show the odd bit of vertical tearing in full-screen mode, again this is a driver issue and can't be fixed.
I'm going to look into the lag fix problem some more because it may be solvable. At the moment it a case of lag or jerks, both are not good! I'm wondering if it occurs because the logic loop does a whole load of rendering that never makes it to the screen, then the lag fix suddenly catches up of some cards, thus making a jerk.
If anyone else can test this demo, I'd really appreciate it. Thanks :-)
1) On two 19" TFTs the demo was perfectly smooth in full-screen mode. One had a slight vertical tearing every so often.
2) On all PCs, windowed mode had vertical tearing. This is a Blitz Max issue which has been posted in the bugs forum. However, it should be noted that the demo ran smoothly with no jerks.
3) I tested on a PC with a 15" and a Geforce Ti4200. This card is the previous generation to the 6800 I believe. Anyway, it exhibited symptoms that sound very like Shamblers i.e. smooth but with big jerks about every 0.8 seconds or so. In windowed mode it was perfectly smooth but with some vertical tearing.
So it looks like Shambler's issue is a Geforce issue and this is not the same issue as older TFTs showing jerkiness (like my laptop). Dumbly I didn't test the demo where the Lag Fix can be turned off on the Geforce Ti4200, but will do ASAP to see if it helps.
So as for jerkiness on old TFTs, there is really nothing than can be done about this esp. as it works fine on newer TFTs. If some TFTs show the odd bit of vertical tearing in full-screen mode, again this is a driver issue and can't be fixed.
I'm going to look into the lag fix problem some more because it may be solvable. At the moment it a case of lag or jerks, both are not good! I'm wondering if it occurs because the logic loop does a whole load of rendering that never makes it to the screen, then the lag fix suddenly catches up of some cards, thus making a jerk.
If anyone else can test this demo, I'd really appreciate it. Thanks :-)