Shocking performance last few days

So last few days it's been disconnecting randomly for few minutes then comes back but today it's been truky shocking 

I've restarted the router and still same thing 

Here's my BQM 

Needs fixing please 

https://www.thinkbroadband.com/broadband/monitoring/quality/share/c353adaa3ded1841051ddacbc8bc931f13095fb1