RUBIX Posted June 15, 2023 Posted June 15, 2023 I searched and did not find a topic specific to this phenomenon. I have a track file with an AH-64D on Sinai to explore this issue. I am seeing CPU Spikes every few milliseconds when viewing certain objects at certain angles (Possibly related to view angle to the sun). I tested with every shadow option and found the problem does go away with shadows turned off. The problem progressively gets worse with higher shadow settings. I have observed the problem continue to get worse with the following settings turned on: Cockpit Global Illumination or MSAA (2x) I believe this is related to many of the CPU Spikes in VR as you fly around and run into an object with specific shadows, reflections, and/or transparent textures. I have, in my example, been able to isolate a specific object we can use to test this issue (Tank with grating next to a helipad on the Sinai map). To be clear, this is not a specific Sinai issue. This occurs on every map, but this is best isolated example I could find so far. Attached is the track log, some in-game stills (showing the CPU Spikes when viewing the fuel tank with the sun behind it (does not happen when viewed from the other angles), and no spikes with the tank not in view, with higher settings the spikes occur when just viewing the helipad), and my settings. CPU Spikes.trk
Arrow11Crash Posted June 30, 2023 Posted June 30, 2023 Man it would be nice if this was the cause of the micro stuttering many of us get. Thanks for putting in the time to collect data and put it here.
Temetre Posted July 1, 2023 Posted July 1, 2023 (edited) Tbf are you sure that this was the shadows and not just general CPU/GPU load? Ive seen stutter issues correlate with framerate (+business), but not tried disabling shadows yet. Edited July 1, 2023 by Temetre
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