[SIM] Adapt nb_prefetch_frames to round-robin configuration

detectors/simulator/src/hw_acquisition.cpp

@@ -125,7 +125,8 @@ namespace detectors::simulator::hw
         m_latency_time = params.acq.latency_time;
 
         // Resize the circular buffer
-        m_buffer.resize(std::min(params.det.nb_prefetch_frames, params.xfer.time_slice.count));
+        auto nb_prefetch_frames = params.det.nb_prefetch_frames / params.xfer.time_slice.stride;
+        m_buffer.resize(std::min(nb_prefetch_frames, params.xfer.time_slice.count));
 
         auto apply_hw_image_proc = [roi, bin = params.img.binning, flip = params.img.flip](auto const& src,
                                                                                            auto const& dst) {