You are well behind in builds. I have been running Windows 10 since the early builds and find it rock solid for some time now. I am on build 10166. If you go into Insider settings and set updates to 'fast', you will get the latest release as soon as available. Anyone running 7 or 8.1 will update to 10 so long as they install all Windows updates to trigger the free update. Running 3.4GHz quad i7 and 8Gb memory here.
Edited by professor973 (Sat 18-Jul-15 10:46:47)