185.19 + VDPAU blit path == stall
I'm seeing stalls of up to 1 second when using VDPAU to play 25fps interlaced mpeg2 with VDPAU_NVIDIA_NO_OVERLAY=1. The stall appears every few minutes and no errors appear on any logs. After each stall, the video appears to fastforward to the correct position in the stream and everything goes on as normal.
VDPAU appears to halt in vdp_presentation_queue_block_until_surface_idle()