Since getting my new laptop and clean-installing Buster, Firefox-ESR keeps locking my computer up so much that I usually have to hard restart because the system is totally unresponsive. When I'm lucky, I can drop into a TTY, kill Firefox and regain control.
According to iotop, I think the offending process is preload.js. This is consistent with my experience that lock-ups happen more frequently on JavaScript-heavy sites like Google and Facebook. I'm pretty sure that these problems will go away with FF 60, but does anyone have any suggestions on what I can do in the meantime to stop JavaScript from overtaking my system? I already played around with hardware acceleration to no effect, although things seem marginally more stable with it disabled. Yes, I have disabled add-ons. Yes I did create a new profile and cleared my caches. No effect.