Thanks for the answer.
From what I gathered, that’s what I thought. Better card,should be a priority.
The external hard drives are connected to usb3 ports. So that will be fine for now.
I have a 650W EVGA Gold PSU.
I’ll check some of those cards prices, and do some testing with the proxy workflow.
Regarding the graphics card, I might be able to reallocate some budget and increase the amount a little bit, if (and only if) the card I get could be reused in a possible future build.
Maybe by the end of the year save enough and get a new CPU, motherboard and extra ram, reuse the rest and get a few more years of decent HD editing, and possibly some limited 4K workflow