MS Security Essentials slows down PC
My Wifes windows 7 laptop is experiencing problems which has been going on for some time. It originally started with any video file being played over the internet being slow and then completely unwatchable. I managed to take a quick look and updated some flash settings and switched to FF from IE which I originally thought solved the problem. To be fair she has been moaning about it for a while but I've never been able to take a look (she wouldn't let it go for enough time for me to look at).
Anyway, last night I managed to spot an issue which seems to be related to MS Security Essentials as whenever I was trying to browse the internet there is always a delay in displaying the content (most noticeably with any moving content) and there was a spike in the CPU which has being taken by MSE. I removed it and sure enough browsing speed was much better but I've never experienced an issue with MSE before. Laptop is an Acer Aspire One and 2GB memory in and looking at the task manager there is not a lot which looks like it is slowing it down. I've run a full AV scan & malwarebytes against it but it comes back clean.
I've checked for updated drivers and there are non but I'll be taking another look this weekend. My last thought was that I would take a look at a different AV but can anyone provide some suggestions of things I may have missed?