'Elastic' movement
Posted: Mon Nov 21, 2016 1:01 pm
On the subject of frame rate / performance / smoothness...
Last night I had a run in which I noticed persistent 'bouncing' of the scenery passing my cab, which hasn't been something that seems to have bothered me previously. Signals, signposts etc seemed to hesitate or lag slightly every second or so, then catch up with their 'correct' position. I've seen 'rubber banding' of AI trains before, but not this effect.
I was admittedly running right on the limit of the GPU's capacity, mostly seeing 99% usage (very occasionally 100%) to maintain a 30 fps lock with shadows and 2x2 SSAA enabled (although it was holding a solid 30 fps apart from the usual tile loading dips, much further apart than the 'bouncing' frequency, according to EVGA Precision X). The effect wasn't visible from the '2' view, where GPU usage dropped to 85-90%, although it was dark so perhaps not as obvious as it might be.
It was most obvious at low speeds, below about 20 mph; presumably at higher speeds objects were passing me too fast for my brain to be predicting their position with that level of accuracy.
I was using the JT 20 Advanced, in the supplied 'Wagon Repair' scenario on GWML. I don't think this loco is particularly scripted, not enough to cause major slowdowns?
I haven't tried any settings changes (shadows or AA off would be the first check!), but just wondered if others had observed the same thing and made any correlations...
Last night I had a run in which I noticed persistent 'bouncing' of the scenery passing my cab, which hasn't been something that seems to have bothered me previously. Signals, signposts etc seemed to hesitate or lag slightly every second or so, then catch up with their 'correct' position. I've seen 'rubber banding' of AI trains before, but not this effect.
I was admittedly running right on the limit of the GPU's capacity, mostly seeing 99% usage (very occasionally 100%) to maintain a 30 fps lock with shadows and 2x2 SSAA enabled (although it was holding a solid 30 fps apart from the usual tile loading dips, much further apart than the 'bouncing' frequency, according to EVGA Precision X). The effect wasn't visible from the '2' view, where GPU usage dropped to 85-90%, although it was dark so perhaps not as obvious as it might be.
It was most obvious at low speeds, below about 20 mph; presumably at higher speeds objects were passing me too fast for my brain to be predicting their position with that level of accuracy.
I was using the JT 20 Advanced, in the supplied 'Wagon Repair' scenario on GWML. I don't think this loco is particularly scripted, not enough to cause major slowdowns?
I haven't tried any settings changes (shadows or AA off would be the first check!), but just wondered if others had observed the same thing and made any correlations...