Newest versions of AUTOMATIC1111 GUI have AMD-support built-in for Linux, and with my 6600xt it seems to work quite well, but I don’t have anything else to compare it with (Batch size 4, LMS KARRAS 100 steps, --medvram finishes in 1 minute e 5 seconds). Are the performances good or sub-par for my gpu?

Often finding precise information for light values is quite hard, so I use those 3 websites: https://growlightmeter.com/light-requirements-for-plants/ https://plantlightdb.com/?q= https://www.houseplantjournal.com/bright-indirect-light-requirements-by-plant/ (Scroll down)

They don’t always agree but they are a good starting point.