MP 7,1 FCPX and multi different gpu, only uses 1?

[rondocap]

Davinci resolve can use multiple different gpus, and fcpx seems to use 2 of the same gpus well, like dual w5700x, etc.

but anytime 2 different gpus are paired, even of the same architecture, it seems like fcpx only really uses the one that’s plugged in to the monitor.

there are rare times where it does seem to use a little more of the other GPU, so it’s a bit confusing.

have you experienced this and what are your conclusions?

 

[DFP1989]

I've never gotten multi-GPU to work in FCP, but I haven't had two identical cards either.

Pairing my W5700X with either a 5700 XT or 6900 XT will only show activity on one card. The card can be selected in the FCP preferences, but at no point does it look to be using both.