Well congratulations to you for never having an issue with Dreamweaver you are lucky.. But there are thousands of people just in forums alone that have had and/or who are having issues with Dreamweaver.
None I my other programs conflict with each other, I have in fact - When I bought a BRAND NEW COMPUTER, with JUST WINDOWS installed and installed CC not even installed an antivirus, disabled firewall no extra fonts, and guess what, IT CRASHED WHEN IT STARTED UP!!!! so unless you have another possibility, I will continue to BLAME DREAMWEAVER!!!!!