Hello everyone - first post here!

I'm currently using Sony Vegas Pro 12. When I'm rendering, after every 400 or so frames, the rendering process will pause for a few seconds, then continue. Is there a reason for this, and if so, is there anything I can do to fix this?

Thank you ever so much for your time!

Windows 10 | AMD Ryzen 7 1700X 3.4GHz [3.8GHz Turbo] Eight-Core 16MB L3 Cache 95W Processor | AMD Radeon RX 580 8GB | Hard Drive: 240 GB Kingston UV400 Series SATA-III Gaming MLC Solid State Disk | Secondary Hard Drive: 1TB SATA-III 6.0Gb/s 7200RPM Hard Drive