Please see the screenshot below for my system specs. The Player.log file has since been overwritten during subsequent rendering attempts, so I don't have the original log to submit. However, I did see the original log, and the crash message at the end seemed to indicate about 6-7 GB of RAM was in use, and Task Manager also showed 6-7 GB of RAM being utilized during a later render attempt. I cancelled all the other render attempts because they were quite slow, so I haven't been able to reproduce the crash message.
The renders were all done with the audio turned off. After I downloaded version 1.26 today, I saw the same rendering behavior. However, when I enabled the audio, the render completed successfully (the first pass for the audio sounded like it was done in real time and took around 3 minutes; the second pass for the video took approximately 2 minutes and 50 seconds). The video was 2 minutes and 48 seconds long. The RAM usage was much lower this time as well (only around 630 MB; see second screenshot below). I should note that the audio in the rendered video contained a lot of glitches.
Another message on this forum indicated SeeMusic Version 1.13 also renders quickly (though it doesn't have the newest particle effects). Could you send me a link to V1.13 to try, please? My email is firstname.lastname@example.org
Please let me know if you need any other information. Thanks!!