Audio "glitches"/pops after rendering.

Hi guys. I am new here.
Found this program after 15 years pause from video editing ( ex ulead media/video studio pro and adobe premiere user ;] )
So far after couple of hours with Resolve i found , that I am doing something wrong most likely.
I've recorded some gameplay footage with build in software into nvidia drivers ( share ).
"Raw" file is 7GB mp4, 1080p, 60fps ( exactly 59.940 from Resolve ) audio 48KHz.
I just wanted to add some logo into my video, used Youtube1080p profile with best quality, but every time after rendering final file has some audio errors ( like pops, drops, glithes ).. Uploaded short clip to youtube to show my problem... pops starting from 9s

My config :

cpu : Ryzen 7 1700
mobo : MSI B350M Gaming Pro with BIOS ver. 2.8
ram : Corsair LPX ( Red) 3200Mhz 16GB
gpu : MSI GTX 980 Ti Gaming 6G
os : Windows 10 Pro
ssd for os, 2tb seagate for storage.

Any ideas ?

PS. I've downloaded trial version of Movie Studio Platinum 14 to, no errors with rendered file at all, but it is really limited software , and most important - it is soooo slow ;/

Thanks in advance for any type of support.