Try running a lens cleaner through your PSX.
I didn’t realise that burners could actually write at 10x.
Usual speeds are 1x, 2x, 4x, 8x, 12x 16x, 24x …
The virtual drive won’t help you if the image you’ve extracted is not correct, nor if the media you are using is not up to par. Extractinga copy from a virtual drive and burning it would IMHO be a complete waste of time.
I’m pretty sure that emtec don’t actually manufacture any CDR, but just rebadge other manufacturers media. Rebadgers often switch to whatever media is cheap this week … so the quality of the media can be very different from one week to another.
Try burning the image with imgburn (it’s free software) at 16x speed.
In the information panel (top right) it will also tell you the MID (aka who manufactured the discs).