Solved Computer Freezes UP

Hello,
I am now using windows 8.1 after trying out windows 10. Windows 10 on my machine was less stable then windows 8.1.
But on both versions, my computer would freeze up if I worked my mouse quickly over my choices. Then I have to wait up to 2 to 5 minutes and then its ok again. Where should I look to prevent it from freezing up?

Hi have you run CCleaner or an Anti-Malware at all
that is what I would try and see if there is any improvement

I'll give Malwarebytes anti malware a try. I used to have Ccleaner but it removed files that were ok. If I use it again, I will have to better understand its language as to what gets cleaned.
Update:
After running the Malware, the problem seems to have ceased. I'll wait a day or two before I mark it solved.