In regard to the nVidia driver setting this is true. The triple buffer setting there works only with OpenGL.
eLPuSHeR wrote:I am wondering if the VSYNC+Triple buffering option under LoG2 configuration is the real thing.
Definately. The triple buffer option in the game options prevents the fps cuts usually seen when VSYNC notices that the GPU can't deliver the requested frames per second.
eLPuSHeR wrote:I have been suffering terrible input lag since game came out and it's almost alleviated by changing pre-rendered frames under nVidia's control panel to the lowest value (1).
Could anyone shed any light on this?.
I've noticed some input-lag here and there but it's too sporadic to call it terrible. It might be a side-effect of the LoG2 engine trying to distinguish between a normal right-click attack and a right-click-hold attempt for a special attack. I did not pay more attention to it because i could not reproduce it reliable.
eLPuSHeR wrote:Of course, when playing with VSYNC OFF I notice an annoying and terrible screen tearing. Right now my monitor refresh is 75Hz and I have also set the maximum capped framerate to 75 too.
Running with VSNYC off naturally results in screen-tearing which was the reason to implement a VSYNC option.
Setting the max framerate in "grimrock.cfg" only matters when you run the game without VSYNC.
Enabling VSYNC renders this setting irrelevant unless it is set too low.
Running VSYNC without the triple-buffing option results in massive jumps in fps when the CPU/GPU combo can't deliver.
They prolly go like this for your setup: 75 -> 37.5 -> 25 -> 18.75 -> 15 -> 12.5 -> ..
Now nVidia drivers have a VSYNC option that work similar to triple-buffering and prevents these fps cuts: it's called "adaptive". Yet it's a rather crude mechanism simply disabling VSYNC when the GPU can't deliver the needed frame rate. This means when fps are too low you will still have fluent video but again with tearing.
I've seen in other post that your monitor allows 60 and 75Hz. Did you test with 60 and 75 or only 75?
eLPuSHeR wrote:My i7 seems strong enough to maintain a steady 75fps.
Did you verify this i.e. by running FRAPS or setting "debugInfo = true" inside grimrock.cfg?
I'm running a 1st gen i7 GTX 760 combo and i know it can't always maintain 75fps for 1920x1080 because there are spots/areas in the game where it can't even maintain 60 on max settings. Yet i do not notice the reduction in framerate due to the triple-buffer setting in game options. Without showing FPS on screen i would not know about the fps drop at all.