I used to use FRAPS and then switched over to Bandicam since it allows me to fine tune & lower the settings to use less file size.
I find it is always better to start off with a good resolution / file size then edit and produce.
Compressing the video file before or after rendering lessens the final quality.
You can also use PD and select a format that outputs good resolution and quality without the huge file size.
My default rendering format for Youtube is WMV 1270x720/30p (6 Mbps)
Rob
PD 14 Ultimate Suite / Win10 Pro x64
1. Gigabyte Brix PRO / i7-4770R Intel Iris Pro 5200 / 16 GB / 1 TB SSD
2. Lenovo X230T / 8GB / Intel HD4000 + ViDock 4 Plus & ASUS Nvidia 660 Ti / Link: https://www.youtube.com/watch?v=ZIZw3GPwKMo&feature=youtu.be