Thx for your response, but only the antivirus system is running at start up, and I see that there is a lot of free RAM. All programs are closed, my computer uses about 25% of RAM. No other program has that issue. I have Photoshop, After effects, Lightroom, Resolve… games like NFS Rivals and only Vegas has that problem…
Actually on my laptop with 4GB RAM and windows7 x64 i have Vegas Pro and it is runnig perfectly…
I just have no idea how to fix it 🙁