Some sounds while in cockpit or VC views seem to buffer and are not heard until after a random delay. This is annoying on touchdown as I can't hear the tire screech to know I've landed. Ground roll sound does not start till I have almost stopped. Also, wind noise tends to come and go in flight (ironically adding to realism by simulating ambient sound change noticed in real flight after ear-popping).
Is this due to a weak card, or is there another cause? I have already re-installed current drivers and Direct X9b. Sound acceleration is enabled in Direct X menu. I am running sound at 'high' in FS sound menu.
Any help appreciated !