Restricting Number of CPU Cores on Heroic?

On Lutris, I can restrict the cpu cored used for a game with the "Restrict number of cores used" option. This is pretty handy for games like Death end re;Quest and Megadimension Neptunia VIIR, as using more than 1 to 2 cores for those games cause them to slow to a crawl.

Is there a way to use a setting like that for the Heroic Games launcher?

Also, I've attached the log file.