Thanks for positive comments! Glad that it works for you too, well, for most of you :)
Prerendering frames (RenderAhead) does put a lot of work onto CPU.
you can use Render.PerfOverlayVisible 1 to see the CPU usage graph, and you'll see large spikes when the stutter happens.
Lowering resolution in addition to ForceRenderAheadLimit will allow you to use much higher gfx settings, I even play with HBAO.
Another tip: you can create your own resolution in Nvidia control panel, I play on 1366x854 :) bgrgyk
2 hours ago
I've found a way to reduce it a lot
open the console with ~ and type in these two commands:
There exist the same settings in Nvidia Control panel but they didn't help me..
Setting ForceRenderAheadLimit to 0 seems to mean "disable", because I think that a value of zero prerendered frames would solve the problem.
In case you want to revert back, I think default values are 3 and 1 (check by entering command without number)