Went installing SONAR PLATINUM 'H' and did some quick testing and so far Win ten seems to be my 'savior' regarding Sonar! I'll detail a little bit more below and then I have some questions to rap things up. other daws like PT, studio 1, Live went all fine though.) Did a fresh WIN7pro 64 bit install on it, then upgraded to windows 10.
Here is a quick testimony on my Windows 10 upgrade of my laptop (which gave me a lot of trouble with sonar in the last years.