Hi
I also am a new member of the Mate user group, I have a dual boot (Win 10 – Mate) Lenovo laptop with 8GB ram and an I5 7200U.
If the link added by Bill_MI doesn’t help here is something I have noticed with VLC in Mate.
I have sometimes found that just starting VLC causes CPU load to increase noticeably and when this happens running something as simple as streaming radio causes the CPU to ramp up to 100%. This doesn’t happen in Win 10.